Question

If x = − 9 and y = 2, evaluate the following expressions:
(4y)² −(2x)² =
4y²−2x²=

Answer 1

Answer:

If x = − 9 and y = 2

(4y)² −(2x)² = (4x2)² −(2x(-)9)²

=> (8x8)- (-18)²

=> 64-324

=> (-) 260

(ii) 4y²−2x²= 4x2²−2(-9)²

=> 16-2x81

=> 16-162

=>(-) 146

Hope it helps

Step-by-step explanation:

Answer 2

Answer:

(4y)^2 -(2x)^2 = 260

4y^2 -2x^2 = -146

Step-by-step explanation:

=(4y)^2 - (2x)^2

=(4×2)^2 - (2× -9)^2

=(8)^2 - (-18)^2

=64 - 324

=260 Ans

=4y^2 -2x^2

=4×(2)^2 - 2× (-9)^2

=4×4 - 2×81

=16 - 162

=146 Ans

I Hope It Helps You

Thank You !