Question

(x-4)(x-5)= 2x(x-6) - x(x-10)+80
Resolución pls

Answer 1

(x-4)(x-5) = 2x(x-6) - x(x-10) + 80
x²-5x-4x+20 = 2x²-12x-x²+10x+80
x²⁻9x+20 = x²⁻2x+80
20-80 = -2x+9x
-60 = 7x
x = -60/7

Answer 2

(x-4)(x-5)=2x(x-6)-x(x-10)+80
x^2-5x-4x+20=2x^2-12x-x^2+10x+80
x^2-9x+20=x^2-2x+80
-9x+2x=80-20
-7x=60
x=-8.57