You start off by multiplying the second bracket by -1 to get rid of the bracket.
So,
(2x3 + x2 - 4x) - 9x3 + 3x2 =
2x3 +x2 - 4x - 9x3 + 3x2 =
(2x3 - 9x3) + (x2 + 3x2) - 4x =
-7x3 + 4x2 - 4x
It's just telling you to multiple like 9×1=9 9×2=18 and so on.
Answer:
3x-526
Step-by-step explanation:
the 3x would go in the beginning. then you subtract (-4-522)= -526.
x=8+sqrt-8/12, x=8-sqrt-8/12
I think...
Answer:
no, no, yes, yes
Step-by-step explanation:
