(x+5)^2+4(x+5)say answer
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(X+5)^2 + 4(x+5)
.
X^2+2×x×5+5×5+4x+20
X^2+10x+25+4x+20
X^2+14x+45
X^2+5x+9x+45
X(x+5)+9(x+5)
(X+9) (x+5)
X = -9 or x = -5
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