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Question
Divide 12 into two parts such that their product is 32.
Sum
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Solution
Let the two parts be x and 12 − x.
Given that their product is 32:
x(12 − x) = 32
12x − x2 = 32
x2 − 12x + 32 = 0
(x − 4) (x − 8) = 0
x = 4 or x = 8
The two parts are:
4 and 8
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