Evaluate
5\left(4x-1\right)^{3}
Expand
320x^{3}-240x^{2}+60x-5
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5\left(64x^{3}-48x^{2}+12x-1\right)
Use binomial theorem \left(a-b\right)^{3}=a^{3}-3a^{2}b+3ab^{2}-b^{3} to expand \left(4x-1\right)^{3}.
320x^{3}-240x^{2}+60x-5
Use the distributive property to multiply 5 by 64x^{3}-48x^{2}+12x-1.
5\left(64x^{3}-48x^{2}+12x-1\right)
Use binomial theorem \left(a-b\right)^{3}=a^{3}-3a^{2}b+3ab^{2}-b^{3} to expand \left(4x-1\right)^{3}.
320x^{3}-240x^{2}+60x-5
Use the distributive property to multiply 5 by 64x^{3}-48x^{2}+12x-1.
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