Question

If x*x-2x-35=0 then x=?

Answer 1

x = 7 or

x = -5

Explanation:

x² - 2x - 35 = 0

x² - 7x + 5x - 35 = 0

x(x - 7) + 5(x - 7) = 0

(x - 7) (x + 5) = 0

x - 7 = 0 or x + 5 = 0

x = 7 or x = -5

Answer 2

x=7 x=-5

Explanation:

x^2 -2x-35 = 0

Factor

What two numbers multiply to -35 and add to -2

-7*5 = -35

-7+5 = -2

(x-7) (x+5) =0

Using the zero product property

x-7 =0 x+5 =0

x=7 x=-5