Evaluate
\left(160x-7\right)^{2}
Expand
25600x^{2}-2240x+49
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\left(160x-7\right)^{2}
Combine 169x and -9x to get 160x.
25600x^{2}-2240x+49
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(160x-7\right)^{2}.
\left(160x-7\right)^{2}
Combine 169x and -9x to get 160x.
25600x^{2}-2240x+49
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(160x-7\right)^{2}.
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