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January 31, 2015

January 31, 2015

Posted by **Sarah** on Tuesday, May 20, 2014 at 4:06pm.

x^2+6x+9/5x+15

- math -
**MathMate**, Tuesday, May 20, 2014 at 6:37pmThere is a good chance you have missed out parentheses in the numerator and the denominator.

All fractions have implicit (i.e. understood) parentheses in the numerator and denominator.

I believe your question means

(x²+6x+9)/(5x+15) even though the question does not actually show the brackets. When you reduce the expression to a single line, the parentheses are required.

(x²+6x+9)/(5x+15)

=(x+3)²/5(x+3)

=(x+3)/5 on condition that x≠3

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