Question

factories z*z + 19z - 150

Answer 1

${z}^{2} + 25z - 6z - 150$
$z(z + 25) - 6(z + 25) = 0$
$(z - 6)(z + 25) = 0$
$z = 6$
$z = - 25$

Answer 2

Your answer is :-

we have

${z}^{2} + 19z - 150 \\ \\ = {z}^{2} + 25z - 6z - 150 \\ \\ = z(z + 25) - 6(z + 25) \\ \\ = (z + 25)(z - 6)$