Question

x square - 3 x minus 10 is equal to zero

Answer 1

${x}^{2} - 3x - 10 = 0$
${x}^{2} + 2x - 5x - 10 = 0$
$x(x + 2) - 5( x + 2)$
$x = - 2 \\ \\ x = 5$

Answer 2

x^2 - 3x -10=0

→x^2 - 5x + 2x - 10=0

→x(x-5) +2(x-5)=0

→(x-5)(x+2)=0

→x=5 and x=-2