Evaluate
36\left(2-3s\right)^{2}
Expand
324s^{2}-432s+144
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\left(12-18s\right)^{2}
Use the distributive property to multiply 6 by 2-3s.
144-432s+324s^{2}
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(12-18s\right)^{2}.
\left(12-18s\right)^{2}
Use the distributive property to multiply 6 by 2-3s.
144-432s+324s^{2}
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(12-18s\right)^{2}.
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