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What two numbers when multiplied together equals 168 and when added together equals 34?
Wiki User
∙ 12y ago
202
Amari Huel
Wiki User
∙ 12y agoxy = 168
x + y = 34
Thus, x = 34 - y
(34 - y)y = 168
34y - y2 = 168
-y2 + 34y - 168 = 0
I don't like leading negative signs, so I multiply by -1:
y2 - 34y + 168 = 0
You can use the quadratic formula here: [34 ± sqrt(1156 - 672)] / 2 = [34 ± 22] / 2 = 17 ± 11 = 28 or 6. These two numbers are the solution.
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