#Help me
craggy zincBOT
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shadow heart
Well, what did you do?
Though, it's a bit odd, since there seems to be an extra bracket.
weak briar
- I focused on 3(3x-8) which is 9x-24
- I focused on (-4(8x+1) which is (-32x - 4) (pretty sure)
Then it’s (9x-24)(-32x-4) I just removed the brackets and turned it into 9x-24-32x-4 = -23x-28
So final answer I got: -23x-28
Is this right or wrong
@shadow heart
shadow heart
Then it’s (9x-24)(-32x-4) I just removed the brackets and turned it into 9x-24-3...
Well, no. This is multiplication.
weak briar
Oh
shadow heart
When you multiply two brackets, you need to multiply each term from the first bracket by each term from the second.
Though, note that in this case it's easier to factor out constants, since the numbers in brackets will be smaller:
3(3x - 8)(-4)(8x + 1) = 3(-4)(3x - 8)(8x + 1) = -12(3x - 8)(8x + 1)
weak briar
Did I get it right until (9x-24)(-32x-4)
shadow heart
Yes.
weak briar
So thats equals: -288x^2 - 36x + 768x + 96 = -288x^2+732x+96
weak briar
Yeah, seems good.
Ty
shadow heart
That bracket could also be erroneous, in which case they could've meant 3(3x - 8) - 4(8x + 1).
shadow heart
Don't really remember what we did in 9th grade. And it probably depends on the country, anyway.