Question

(3x-4y)(3x+4y)+(4x-3y)²-4(20-35y)

Answer 1

Resposta: 25x²-7y²-24xy+140y-80

Explicação passo-a-passo:

(3x-4y)(3x+4y)+(4x-3y)²-4(20-35y)

(3x-4y).(3x+4y)+(4x-3y).(4x-3y)-4.(20-35y)

(9x²+12xy-12xy-16y²)+(16x²-12xy-12xy+9y²)-80+140y

(9x²-16y²)+(16x²-24xy+9y²)-80+140y

9x²-16y²+16x²-24xy+9y²-80+140y

25x²-7y²-24xy-80+140y

25x²-7y²-24xy+140y-80