Question

Multiply 5x^2+3-4x by 5-4x . pls help me its urgent . give proper explanation​

Answer 1

Step-by-step explanation:

1. 5x*2+3-4x/5-4x=10x+3/5-4x=1=10x+3=5-4x=10x+4x=5-3 =14x=2=x=1/7

Answer 2

Step-by-step explanation:

==>(5x^2+3-4x)(5-4x)

==>{(5x^2*5)+(3*5)+(-4x*5)+(5x^2*(-4x))+(3*(-4x))+(-4x)(-4x)

==>25x^2+15-20x-20x^3-12x+16x

==>-20x^3+25x^2-16x+15

I HOPE IT HELPED YOU.....