Question

A-(3x - 4)(x + 1)
B- (3x - 9) (2x + 1)
C- (3t²- t + 1)²​

Answer 1

Respuesta:

Solución:

A) (3x-4)(x+1)=3x(x+1)-4(x+1)

=3x²+3x-4x-4

=3x²-x-4

B) (3x-9)(2x+1)=3x(2x+1)-9(2x+1)

=6x²+3x-18x-9

=6x²-15x-9

C) (3t²-t+1)²=((3t²-t)+1)²

=(3t²-t)²+2(3t²-t)(1)+(1)²

=(3t²)²-2(3t²)(t)+(t)²+6t²-2t+1

=9t⁴-6t³+7t²-2t+1