Question

8.Find the roots of quadratic equation: 2x2 + 5x + 2 =0

Answer 1

Answer:

$2x^{2}+5x+2=0\\2x^{2}+4x+x+2=0\\2x(x+2)+1(x+2)=0\\(2x+1)(x+2)=0\\x+2=0 ||=> x=-2\\2x+1=0||=> x=-1/2$