Evaluate
x^{4}-\frac{x^{2}}{16}-\frac{1}{18}
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x^{4}-\frac{x^{2}}{16}-\frac{1}{18}
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\left(x^{2}-\frac{1}{16}\right)x^{2}-\frac{1}{18}
Use the distributive property to multiply x-\frac{1}{4} by x+\frac{1}{4} and combine like terms.
x^{4}-\frac{1}{16}x^{2}-\frac{1}{18}
Use the distributive property to multiply x^{2}-\frac{1}{16} by x^{2}.
\left(x^{2}-\frac{1}{16}\right)x^{2}-\frac{1}{18}
Use the distributive property to multiply x-\frac{1}{4} by x+\frac{1}{4} and combine like terms.
x^{4}-\frac{1}{16}x^{2}-\frac{1}{18}
Use the distributive property to multiply x^{2}-\frac{1}{16} by x^{2}.
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