Question

(x + 5)(x + 2) –3(4x – 3) = (x – 5)2(в степени)

Answer 1

$(x+5)(x+2)-3(4x-3)=(x-5)^2 \ x^2+2x+5x+10-12x+9=x^2-10x+25 \ -5x+10x=25-19 \ 5x=6 \ x=frac{6}{5} \ x=1,2$

Answer 2

x^2+2x+5x+10-12x+9=x^2-10x+25
x^2-5x-x^2+10x=25-10-9
5x=6
x=6/5
x=1.2