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1820-80x^{4}
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1820-80x^{4}
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\left(64-16x^{4}+480-180\right)\times 5
Multiply 48 and 10 to get 480.
\left(544-16x^{4}-180\right)\times 5
Add 64 and 480 to get 544.
\left(364-16x^{4}\right)\times 5
Subtract 180 from 544 to get 364.
1820-80x^{4}
Use the distributive property to multiply 364-16x^{4} by 5.
\left(64-16x^{4}+480-180\right)\times 5
Multiply 48 and 10 to get 480.
\left(544-16x^{4}-180\right)\times 5
Add 64 and 480 to get 544.
\left(364-16x^{4}\right)\times 5
Subtract 180 from 544 to get 364.
1820-80x^{4}
Use the distributive property to multiply 364-16x^{4} by 5.
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