Question

A= {2,3}, B={x: x is sol of x square +5x + 6=0} please answer it quickly and explain the equation thing to me​

Answer 1

Step-by-step explanation:

A= {2,3}

B={x: x is sol of x square +5x + 6=0}

${x}^{2} + 5x + 6 = 0 \\ {x}^{2} + 2x + 3x + 6 = 0 \\ x(x + 2) + 3(x + 2) = 0 \\ (x + 2)(x + 3) = 0 \\ x + 2 = 0 \: or \: x + 3 = 0 \\ x = - 2 \: or \: x = - 3 \\ \therefore \: B \: = \{ - 3, \: - 2 \}$