Question

(х-12)*(3-х)=0
ПОМОГИТЕ

Answer 1

(x-12)*(3-x)=0
3x- $x^{2}$-36+12x=0
-$x^{2}$+15x-36=0
D=15²-4*36
D=225-144
D=81
√D=9
x1,x2=(-15+-9)/-2=12;3
x1=12
x2=3