(x2 + 7x - 18) = (x + 9)(x - 2)
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X2 + 3X - 18 Ask yourself, what two factors of - 18 add to 3? (X + 6)(X - 3) -----------------
3(x+2) = x -18 3x+6 = x -18 3x -x = -18 -6 2x = -24 x = -12
x^2 + 18 = 9x x^2 - 9x + 18 = 0 (x )(x ) Since 6 * 3 = 18 and 6 + 3 = 9, (x 3)(x 6) Since the 18 is positive, the factors are either both positive or both negative. Since the 9 is negative, they must both be negative. (x - 3)(x - 6)
The answer to this question is 18. This is a math problem.
You add -18... 18 + y = 32 18 + y + (-18) = 32 + (-18) y = 14