Question

roots of the quadratic equation (2x+1) (x+2)=0are​

Answer 1

(2x+1) (x+2)=0

x×(2x+1)+2×(2x+1)=0

2x²+1x+4x+2=0

2x²+5x+2=0

2x²+4x+1x+2=0

2x(x+2)+1(x+2)=0

(x+2)(2x+1)=0

(x+2)=0 or (2x+1)=0

x=-2 or 2x=-1

x=-2 or x=-1/2

the roots of quadratic equation is -2 and -1/2.