Помогите plz (4x-1)²-(2x-3)(6x+5)=4(x-2)²+16x

Question

Помогите plz (4x-1)²-(2x-3)(6x+5)=4(x-2)²+16x

Answer 1

(4x-1)²-(2x-3)(6x+5)=4(x-2)²+16x 
16х^2-8х+1-(12х^2+10х-18х-15)=4(х^2-4х+4)+16х
16х^2-8х+1-(12х^2+10х-18х-15)= 4х^2-16х+16+16х
16х^2-8х+1-12х^2+8х+15=4х^2+16
16х^2+1-12x^2+15=4x^2+16 
4x^2+16=4x^2+16 выражение истинно 

Answer 2

(4x-1)²-(2x-3)(6x+5)=
=16x²-8x+1-(12x²+10x-18x-15)=
=16x²-8x+1-12x²+8x+15=
=4x²-16x+16+16x=4(x²-4x+4)+16x=4(x-2)²+16x