@Relsey-TheElder
(I'm so sorry I wasn't on earlier, I actually really enjoy math)
(I'm so sorry I wasn't on earlier, I actually really enjoy math)
(I'm like 56% sure the answer to the second problem is -1… not sure if that's any help because your test is already over but…. yep)
(Upon further analysis and one trip through my math notebook it was definitely -1 sorry about that)
Nah, dude, you're good, and thank you.
I've got more, if anyone thinks they can help
Hmm what're ya struggling with?
Literally everything, but uh, polynomials? And such?
Mkay, I'll try to help
(I hate math but I'm pretty decent at it? I did applied math last semester and got one of the highest scores in the school so I might be able to help? (Give me a problem and I can probably show you how to solve it…)
(And I think I remember how to solve polynomials…)
Well, here's this for the current quiz
(5x+3)(5x-3)
Alright. So you do FOIL, which means First, Outside, Inside, Last when you multiply.
Here's step by step:
(5x+3)(5x-3)
F: (first terms of both parts) 5x and 5x. Multiply them, you get 25x^2.
O: (outside terms of the entire expression) 5x and -3. Multiply them, you get -15x.
I: (inside terms of the entire expression) 3 and 5x. Multiply them, you get 15x.
L: (last terms of both parts) 3 and -3. Multiply them, you get -9.
Put everything together (you literally just add): 25x^2 + (-15x) + 15x + (-9).
The -15x and 15x cancel each other out since combined they equal 0, so you're left with 25x^2 - 9.
Another trick is that since 5x+3 and 5x-3 are basically the same thing except for the addition and subtraction sign, you can just multiply the first and last terms of both parts.
First terms: 5x and 5x, multiply you get 25x^2.
Last terms: 3 and -3, multiply you get -9.
Put it all together: 25x^2 - 9.
This only works if they both are the same thing with one addition and one subtraction sign.
(Sorry I took too long…. stuff is pretty rock rn…)
Hey, that actually makes a bit of sense. Thanks man!
(Sorry if I wasn't any help…)
=5x+3*5x-3
=5x+15x-3
=20x-3
(The asterix ( * ) is multiplication)
…that's not right… since the question was (5x+3)*(5x+3). The parentheses matter.
I hate foil so much, I always want to just distribute normally and then Foil comes out of no where and is like BWUHW It's me and stabs you with tedious math work.
=5x+3*5x-3
=5x+15x-3
=20x-3
(The asterix ( * ) is multiplication)…that's not right.
I tried….. Facepalms that's how I was taught to do it… though I could be missing a step…
XD Foil is pretty annoying but it's a good way to remember.
=5x+3*5x-3
=5x+15x-3
=20x-3
(The asterix ( * ) is multiplication)…that's not right… since the question was (5x+3)*(5x+3). The parentheses matter.
RIIIIGHT….. (This is why I hate math…. I think I have it, then I do it all wrong…)
Wait is the problem a polynomial or just a math problem because if it's a polynomial the math is completely different, if it's a polynomial the answers are -.6 and .6
=5x+3*5x-3
=5x+15x-3
=20x-3
(The asterix ( * ) is multiplication)…that's not right.
I tried….. Facepalms that's how I was taught to do it… though I could be missing a step…
No no, you're fine. The question just had parentheses around the terms so you had to do foil.
(I believe a polynomial is a group of terms, and contains only multiplication. No addition or subtraction)
=5x+3*5x-3
=5x+15x-3
=20x-3
(The asterix ( * ) is multiplication)…that's not right.
I tried….. Facepalms that's how I was taught to do it… though I could be missing a step…
No no, you're fine. The question just had parentheses around the terms so you had to do foil.
I was never taught foil….
Wait is the problem a polynomial or just a math problem because if it's a polynomial the math is completely different, if it's a polynomial the answers are -.6 and .6
^^^ yeah if that entire expression equals 0 you have to ignore everything I said.
=5x+3*5x-3
=5x+15x-3
=20x-3
(The asterix ( * ) is multiplication)…that's not right.
I tried….. Facepalms that's how I was taught to do it… though I could be missing a step…
No no, you're fine. The question just had parentheses around the terms so you had to do foil.
I was never taught foil….
Hmm that's weird.
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