I have trouble with these two questions. Factor 1) 5r^2-11rs+2s^2 2) 5x^3-4x^2-5x+4 Please explain in detail. Thanks
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Originally Posted by malcomfred I have trouble with these two questions. Factor 1) 5r^2-11rs+2s^2 2) 5x^3-4x^2-5x+4 Please explain in detail. Thanks 1. Hint: This is fairly straighforward because the signs must both be negative and 5 and 2 are both prime numbers. 2. Hint: group the terms like this $\displaystyle (5x^3-5x)-(4x^2-4)$
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