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How to factor 9x^2-25
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1 vote
How to factor 9x^2-25

How to factor 9x^2-25-example-1
User Firula
by
6.8k points

2 Answers

1 vote
Since the 9 and 25 are both perfect squares and it is a difference (subtraction), you have a difference of perfect squares. This always factors to the form
(a+b)(a-b).
(3x-5)(3x+5) is the answer
User Shiniece
by
6.5k points
1 vote
9x^2 - 25 = (3x-5)(3x+5)
User Joren Van Severen
by
7.0k points
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