Question

(3x+2) (3x-2)=

(2x+a) (4x²-2ax+a²)=

(3ab-4x)²

Answer 1

Tenemos:

(3x+2) (3x-2)
=>3x(3x-2)+2(3x-2)
=>3x²-6x+6x-4
=>3x²-4

(2x+a) (4x²-2ax+a²)
=>2x(4x²-2ax+a²)+a(4x²-2ax+a²)
=>8x³-4ax²+2a²x+4ax²-2a²x+a³
=>8x³+a³

(3ab-4x)²
=>(3ab)²-2(3ab)(4x)+(4x)²
=>9a²b²-24abx+16x²

Espero ayude