Which is the solution t other equation (x-2) (x+5) = 18

(x-2) (x+5) = 18

x²-2x+5x-10 = 18

x² + 3x - 28 = 0 - 28 = 7 * (-4), 3=7 + (-4)

(x+7) (x-4) = 0

x = - 7, x=4

(x-2) (x+5) = 18

//expand expression

x² - 2x + 5x - 10 = 18

//combine like terms

x² + 3x - 10 = 18

//Take away 18 from both sides

x² + 3x - 28 = 0

//factorise x² + 3x - 28

(x + 7) (x - 4) = 0

//apply zero product property

x + 7 = 0 or x - 4 = 0

//Evaluate

x = - 7 or x = 4

Answer: x = - 7 or 4