need help i did something wrong
will medal

Question

need help i did something wrong 
will medal

chosenmatt · Answer

kay

anonymous · Answer

$$find -\left[ f(x)+g(x)-h(x) \right]$$

$$f(x)=5x ^{3}+3x ^{2}-7x$$
$$g(x)=3x ^{3}-5x ^{2}-2$$
$$h(x)=-9x ^{2}+8$$

anonymous · Answer

okay so like i think what confuses me is the negative sign in front of the not parenthesis but u know what i mean

anonymous · Answer

like am i supposed to distribute that?

anonymous · Answer

@chosenmatt

anonymous · Answer

@iGreen

igreen · Answer

$(5x^3 + 3x^2 - 7x) + (3x^3 - 5x^2 - 2) - (-9x^2 + 8)$

Combine like terms

anonymous · Answer

yea i get that but what about the negative?

anonymous · Answer

do i distribute it now or wait till after i have solved

igreen · Answer

It's best to distribute now.. I guess..can you do that?

anonymous · Answer

this is how it looks before distributing 
$$-\left[ (5x ^{3}+3x ^{2}-7x)+(3x ^{3}-5x ^{2}-2)-(-9x+8) \right]$$


so i should distribute the negitive sign first okay one second because i did that before and i got the wrong anwser so i guess i added or subtracted something wrong

anonymous · Answer

okay im doing something wrong because i keep getting the wrong anwser

anonymous · Answer

@iGreen

igreen · Answer

$-(-9x + 8)$

$-9x \times -1$

$8 \times -1$

anonymous · Answer

wait what that doesnt make sense

anonymous · Answer

@iGreen