(1-x)(200+40x)-24=200
200+40x-200x-40x^2-24=200
5x^2+20x+3=0
x^2+4x+4-4+3/5=0
(x+2)^2=17/5
x=-2+√85/5 x=-2-√85/5
(24-2x)(48-2x)=(24*48*5)/9
(12-x)(24-x)=160
288-12x-24x+x^2=160
x^2-36x+128=0
(x-32)(x-4)=0
x1=32 x2=4
(1-x)(200+40x)-24=200
200+40x-200x-40x^2-24=200
5x^2+20x+3=0
x^2+4x+4-4+3/5=0
(x+2)^2=17/5
x=-2+√85/5 x=-2-√85/5
(24-2x)(48-2x)=(24*48*5)/9
(12-x)(24-x)=160
288-12x-24x+x^2=160
x^2-36x+128=0
(x-32)(x-4)=0
x1=32 x2=4