Simplify. (8x² + 7x + 4) – (6x² - 3x – 4)

Sorry if this is wrong, but: So it's 2x^2+4x+4? Or did I do that wrong?? I was told to combine like terms by subtraction, did I do that right?

Question

Simplify. (8x² + 7x + 4) – (6x² - 3x – 4)

Sorry if this is wrong, but: So it's 2x^2+4x+4? Or did I do that wrong?? I was told to combine like terms by subtraction, did I do that right?

kc_kennylau · Answer

did he want you to factorize

kc_kennylau · Answer

remember, - - => +

anonymous · Answer

it would be 2x^2+ 10x+8 because when you subtract a negative you are actually adding a positive.

anonymous · Answer

Okay. So is that the simplified form or just a simpler form of the original problem? Does it still need to be simplified??

anonymous · Answer

the simplified form is just a fancy word for answer.

anonymous · Answer

So that's the answer then?

anonymous · Answer

yes

anonymous · Answer

Thank you. Sorry for being so dumb about it. :D

anonymous · Answer

no problem!

anonymous · Answer

Wait, sorry, one more question.

What would be the best way to show that? Like if you were told to show the work??

kc_kennylau · Answer

you would like to break the bracket

kc_kennylau · Answer

(8x² + 7x + 4) – (6x² - 3x – 4)
=8x² + 7x + 4 – 6x² + 3x + 4

kc_kennylau · Answer

=8x² - 6x² + 7x + 3x + 4 + 4 (if you like to group them)

kc_kennylau · Answer

=(8x² - 6x²) + (7x + 3x) + (4 + 4) (it doesn't actually need so much steps)

kc_kennylau · Answer

=2x^2+10x+8

kc_kennylau · Answer

those steps are unnecessary lol

anonymous · Answer

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