Question

-a²+7b⁴-2c³ if a= -4 b= -2c= -3

Answer 1

150

Explanation:

The given expression: -a²+7b⁴-2c³

if a= -4

b= -2

c= -3​

= -(-4)² + 7(-2)⁴ - 2(-3)³

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

-a²+7b⁴-2c³ = 150