Answer:
C) 2, -2
Step-by-step explanation:
When you subtract 14 from both sides of the equation, you are left with ...
x^2 = 4
Taking the square root of both sides gives ...
x = ±√4 = ±2
Solutions are x = 2, x = -2.
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<em>Alternate solution</em>
Subtract 18 from both sides of the equation.
x^2 -4 = 0
(x -2)(x +2) = 0 . . . . . factor the differenc x = 2, x = -2e of squares
. . . . . . values of x that make the factors zero
The zero product rule tells you the product is only zero if one or more of the factors is zero.
