Evaluate
16x^{2}-24x+4
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16x^{2}-24x+4
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\left(6x-2\right)^{2}-4x^{2}\times 5
Multiply x and x to get x^{2}.
36x^{2}-24x+4-4x^{2}\times 5
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(6x-2\right)^{2}.
36x^{2}-24x+4-20x^{2}
Multiply 4 and 5 to get 20.
16x^{2}-24x+4
Combine 36x^{2} and -20x^{2} to get 16x^{2}.
\left(6x-2\right)^{2}-4x^{2}\times 5
Multiply x and x to get x^{2}.
36x^{2}-24x+4-4x^{2}\times 5
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(6x-2\right)^{2}.
36x^{2}-24x+4-20x^{2}
Multiply 4 and 5 to get 20.
16x^{2}-24x+4
Combine 36x^{2} and -20x^{2} to get 16x^{2}.
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