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Factor completely: X2-7x-30

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Factor completely: X2-7x-30

asked Feb 26, 2015 73.3k views

4 votes

Factor completely: X2-7x-30

Mathematics
high-school

Svkvvenky asked

8.3k points

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2 Answers

5 votes

$x^2-7x-30=\\ x^2-10x+3x-30=\\ x(x-10)+3(x-10)=\\ (x+3)(x-10)$

Ryan Watkins answered Mar 1, 2015

by Ryan Watkins

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4 votes

x²-7x-30

=(x-10)(x+3)

Therefore, x=10 and x=-3.

Shaun McCarthy answered Mar 4, 2015

by Shaun McCarthy

8.1k points

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