Question

What is the value of 9x²y-3 for x = 2 and y = 4.

Answer 1

9(2)^2(4)-3
= 9(4)(4)-3
= 36 x 4 - 3
= 144 - 3
= 141

Answer 2

141

Explanation:

Plug into the expression.

9*2^2*4-3

9*4*4-3

9*16-3

144-4

141