Question

What is m to the power of 2 minus 11m minus 60 in product/sum method

Answer 1

m^2 -11m -60 = 0

m^2 -11m =60

(m^2 -11m + 121/4) = 361/4

(m - 11/2)^2 = 361/4

m - 11/2 = + or - 19/2

m = 11/2 + 19/2, 11/2 - 19/2

m = 15, -4

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m^2 -11m -60

(11 +- Square root (121 +240))/2

11/2 +- 19/2

m= 15, -4

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m^2 -11m -60

(m - 15) (m + 4)

m = 15, -4