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  • 5 years ago

Add. Simplify by removing factors of 1if possible 28zx + z-7x ----- ----- z^2-49x^2 z+7x

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  1. dumbcow
    • 5 years ago
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    First factor bottom (z-7x)(z+7x) This shares the (z+7x) in other denominator so common denominator will be (z-7x)(z+7x) multiply 2nd fraction by (z-7x) on top and bottom \[=\frac{28xz +(z-7x)(z-7x)}{(z-7x)(z+7x)}\] expand the top and add like terms \[=\frac{z^{2} + 49x^{2}}{(z-7x)(z+7x)}\] top will not factor so this is answer

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