Evaluate
49x^{7}-42
Factor
7\left(7x^{7}-6\right)
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7x^{7}\times 7-42
To multiply powers of the same base, add their exponents. Add 6 and 1 to get 7.
49x^{7}-42
Multiply 7 and 7 to get 49.
7\left(7x^{6}x-6\right)
Factor out 7. Polynomial 7x^{7}-6 is not factored since it does not have any rational roots.
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