Evaluate
9\left(x-2\right)^{2}-32
Expand
9x^{2}-36x+4
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9x^{2}-36x+36-32
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(3x-6\right)^{2}.
9x^{2}-36x+4
Subtract 32 from 36 to get 4.
9x^{2}-36x+36-32
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(3x-6\right)^{2}.
9x^{2}-36x+4
Subtract 32 from 36 to get 4.
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