Question

Help 1 medal
What is the simplified form of - 3Z 2 ( z+2) -4 (z2+1)?
A. -7 x2 +1
B. -3z 3-4Z -6Z-4
C.-3Z 3-2Z-4
D.-3z3-10Z-4
I think it is C? If you could break it down if I'm wrong .Ty

Answer 1

You are right. It is c

Answer 2

Can u help with this one ? There is a circular garden in the middle of a square yard.The radius of the circle is 4 x, the side lenght of the yard is 20. What is the area of the part of the yard that is not covered by a circle ?
A. 4x(5)
B. 8x 2 (5-PIE)
C.16x(25+ Pie)
D. 16x2(25-Pie)
Is it B ?

Answer 3

You are correct. It is B

Answer 4

Both are wrong ;(