Evaluate
9\left(x-4\right)^{2}+4
Expand
9x^{2}-72x+148
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9x^{2}-72x+144+4
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(3x-12\right)^{2}.
9x^{2}-72x+148
Add 144 and 4 to get 148.
9x^{2}-72x+144+4
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(3x-12\right)^{2}.
9x^{2}-72x+148
Add 144 and 4 to get 148.
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