Question

simplify.(a)3x–5 – x + 9x + 4 when x= –2. (b)z³–2z+10 ,when z=–1.
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Answer 1

Answer:

This is your answer

Hope it helps you!!!!

Answer 2

Answer:

(a) -23

(b) 11

Step-by-step explanation:

(a)

$3x-5-x+9x+4=11x-1$

$=11(-2)-1\\=-22-1=-23$

(b)

$z^{3} -2z+10=(-1)^{3} -2(-1)+10\\=-1+2+10=11$