Question

-a²+7b⁴-2c³ if a= -4 b= -2c= -3

Answer 1

150

Step-by-step explanation:

The given expression: -a²+7b⁴-2c³

if a= -4

b= -2

c= -3​

= -(-4)² + 7(-2)⁴ - 2(-3)³

`\begin{gathered} -(-4*-4)+\text{ 7(-2}*-2*-2*-2)-\text{ 2(-3}*-3*-3) \\ =\text{ -(16) + 7(16) -2(-27)} \\ =\text{ -16 + 112 + 54} \\ =\text{ 150} \end{gathered}`

-a²+7b⁴-2c³ = 150