SOLUTION: please help me solve this equation {{{x^2 + 4x - 21 = 0 ?}}}

SOLUTION: please help me solve this equation {{{x^2 + 4x - 21 = 0 ?}}}

Algebra.Com

Question 254049: please help me solve this equation
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!

This quadratic factors. Hint: 7 X (-3) = - 21. 7 + (-3) = 4.

John

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