what adds to be 7 but multiply to be -8

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what adds to be 7 but multiply to be -8

Guest Dec 1, 2020

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Best Answer

+1

x+y = 7 y = 7-x

xy = -8 sub in above equation

x (7-x) = -8

7x - x^2 + 8 = 0 Quadratic formula x and y = -1 and 8

Guest Dec 1, 2020

1⁺⁰ Answers

+1

Best Answer

x+y = 7 y = 7-x

xy = -8 sub in above equation

x (7-x) = -8

7x - x^2 + 8 = 0 Quadratic formula x and y = -1 and 8

Guest Dec 1, 2020

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