Question

Find the roots of quadratic of equation 2x hole square+5x+3=0 using the formula

Answer 1

$2x {}^{2} + 5x + 3 = 0 \\ 2x {}^{2} + 2x + 3x + 3 = 0 \\ 2x(x + 1) + 3(x + 1) = 0 \\ (2x + 3)(x + 1) = 0 \\ 2x + 3 = 0 \\ x = - 3 \div 2 \\ x + 1 = 0 \\ x = - 1 \\ therefore \: x = - 3 \div 2and - 3 \\ that \: is \: the \: roots \: of \: the \: qadratic \: equation \: are \: - 3 \div 2 \: and \: - 3$