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m2 - 8m = 16 so m2 - 8m + 16 = 0
m2 - 4m - 4m + 16 = 0
m(m - 4) - 4(m - 4)=0
(m - 4)(m - 4) = 0
So m = 4
Solve using the quadratic formula
(b-4) squared
4x2/81 = 1 - 16x2/25100x2 = 25*81 - 16*81x21396x2 = 2025x2 = 2025/1396x = +/- 1.2044, approx.
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9x squared plus 16 = 0 factored is plus and minus 4/3 i.