Question

Solve the following quadratic equation by formula method m ( m - 10 ) = -25​

Answer 1

$\bold{m ( m - 10 ) = -25}$

$\bold{m {}^{2} - 10m = -25}$

$\bold{m {}^{2} - 10m + 25 = 0}$

$\bold{m {}^{2} - 10m - ( -25) = 0}$

$\bold{(m -5) {}^{2} = 0 }$

$\bold{m -5 = 0 }$

$\bold{m = 5 }$