Evaluate
\frac{2x^{2}}{3}+7
Factor
\frac{2x^{2}+21}{3}
Graph
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\frac{2x^{2}}{3}+\frac{7\times 3}{3}
To add or subtract expressions, expand them to make their denominators the same. Multiply 7 times \frac{3}{3}.
\frac{2x^{2}+7\times 3}{3}
Since \frac{2x^{2}}{3} and \frac{7\times 3}{3} have the same denominator, add them by adding their numerators.
\frac{2x^{2}+21}{3}
Do the multiplications in 2x^{2}+7\times 3.
\frac{2x^{2}+21}{3}
Factor out \frac{1}{3}. Polynomial 2x^{2}+21 is not factored since it does not have any rational roots.
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Limits
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