Perfect Square Trinomial
Work Step by Step
By squaring the binomial $u+v$: $(u+v)^2=(u+v)(u+v)=uu+uv+vu+vv=u^2+2uv+v^2$ By squaring the binomial $u-v$: $(u-v)^2=(u-v)(u-v)=uu-uv-vu+(-v)(-v)=u^2-2uv+v^2$
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