Evaluate
4x\left(3x-5\right)\left(7x+2\right)
Expand
84x^{3}-116x^{2}-40x
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\left(28x^{2}+8x\right)\left(3x-5\right)
Use the distributive property to multiply 4x by 7x+2.
84x^{3}-140x^{2}+24x^{2}-40x
Apply the distributive property by multiplying each term of 28x^{2}+8x by each term of 3x-5.
84x^{3}-116x^{2}-40x
Combine -140x^{2} and 24x^{2} to get -116x^{2}.
\left(28x^{2}+8x\right)\left(3x-5\right)
Use the distributive property to multiply 4x by 7x+2.
84x^{3}-140x^{2}+24x^{2}-40x
Apply the distributive property by multiplying each term of 28x^{2}+8x by each term of 3x-5.
84x^{3}-116x^{2}-40x
Combine -140x^{2} and 24x^{2} to get -116x^{2}.
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