First you take away 36 from both sides which leaves you with: x^2+10x-24=0 Then you just factorise: x(x+12)-2(x+12) Take the numbers inside the bracket: x+12 = 0 Minus 12 from both sides x = -12 Then take the numbers outside the brackets: x-2 = 0 Add 2 on both sides: x = 2
