Question

Решите уравнения 1) (m-5)(m+4) / 2m-10 =0 2)(5k-3)(6k+2)=0

Answer 1

1)

$\frac{(m-5)(m+4)}{2m-10} =0\\\\\frac{(m-5)(m+4)}{2(m-5)}=0\\\\\frac{m+4}{2} =0\\\\m+4=0\\\\m=-4$

2)

$(5k-3)(6k+2)=0\\\\5k-3=0\\\\5k=3\\\\k=0.6\\\\6k+2=0\\\\6k=-2\\\\k=-\frac{2}{3}$