Question

(5x-10)*(0,3x+0,9)=0

Answer 1

1,5x квадрат + 4,5x - 3x - 11,7=0

Answer 2

(5x-10)*(0,3x+0,9)=0
1,5 x^{2} +4,5x-3x-9=0
1,5 x^{2} +1,5x-9=0
 x^{2} +x-6=0
x=-3
x=2