Question

Find the value of the expression a² + 2ab² - 2b²,where a = 3 , b = 2 with full explanation. ​

Answer 1

Answer:

25

Step-by-step explanation:

3²+2*3*2²-2*2²

9+6*4-2*4

9+24-8

25

Answer 2

Answer:

25

Step-by-step explanation:

a² + 2ab² - 2b²

Substituting the value of a and b in the given equation as 3 and 2 respectively,

(3)² + 2(3)(2)² -2(2)²

= (3×3) + (2 × 3 × 2 × 2) - (2 × 2 × 2)

= 9 + 24 - 8

= 9+ 16

= 25