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Lvl 14

mn = 36

m + n = -12

m = -12 -n

Substitute

(-12 -n) n = 36

-12 n _ n^2 = 36

n^2 + 12n + 36 = 0

Factor

( n + 6)(n + 6) = 0

n = -6

& m = -6

(-6) and (-6).

Q: What multiplies to 36 and adds to -12?

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The factor pairs of 36 are (36, 1) (18, 2) (12, 3) (9, 4) (6, 6) None of them add up to 9. If that was -36, you could use 12 and -3

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The factor pairs of 36 are (36, 1) (18, 2) (12, 3) (9, 4) (6, 6) None of them add up to 9. If that was -36, you could use 12 and -3

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