Question

Find the following products and evaluate the results for x = - 1 and y = 2. (5+2x)(5-2x)(25-4x²)​

Answer 1

Answer:

Step-by-step explanation:

(5+2x)(5-2x)(25-4x²)

={(5)²-(2x)²} (25-4x²)

=( 25-4x²) (25-4x²)

= (25-4x²)²

= (25)²+ (4x²)²-2*25*4x²

= 625 + 16x⁴ - 200x²

= 625 + 16(-1)⁴-200(-1)²

= 625 + 16 - 200

= 441