Factor the original equation to get (x-7)(x+2)=0, so x=7 or x=-2
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9x2-9x = 0 x2-x = 0 x(x-1) = 0 x = 1 or x = 0
x = 12
Solve this problem -x squared -40x- 80 =0
16x³ - x = 0 By factorization, we obtain: x(16x² - 1) = 0 x(4x - 1)(4x + 1) = 0 Set each term by 0 and solve for x to get: x = 0 and 4x - 1 = 0 and 4x + 1 = 0 x = {0, ±¼}
x * x - 9 = 0 PEMDAS = Multiplication first. What multiplied it self equals nine? 3. So x = 3