Asked by juliet
X2 + 9X + 20 = 0
Answers
Answered by
Damon
4 + 5 = 9 and 4*5 = 20
so
(x+4)(x+5) = x^2 + 9 x + 20
so
(x+4)(x+5) = x^2 + 9 x + 20
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