math0101
What am I doing wrong here?
(5x^2 - 5) / (x - 1) = 5x(x - 1) / (x - 1) = 5x
The answer should be 5(1 + 1)
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robinfr93
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answer should be 10???
O_O
math0101
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5(x+1)
Sorry, typo!
Callisto
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(5x^2 - 5) / (x - 1) = 5(x + 1) / (x - 1)
________
The underlined part is wrong.
5x^2-5
Take out the common factor 5
=> 5 (x^2 -1)
Factor (x^2-1) using the identity \(a^2-b^2 = (a+b)(a-b)\)
Can you try it again?
Callisto
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Oops sorry! The underlined part should be 5(x-1)
math0101
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Aha, got it! Thanks
Callisto
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Welcome :)