\(24,\Leftrightarrow\left(3x-4\right)\left(x-2\right)=0\Leftrightarrow\left[{}\begin{matrix}x=2\\x=\dfrac{4}{3}\end{matrix}\right.\left(C\right)\\ 25,=\left(x+y\right)^2=\left(-4\right)^2=16\left(A\right)\\ 26,P=\left(n^2+3n\right)\left(n^2+3n+2\right)\\ =\left(n^2+3n\right)^2+2\left(n^2+3n\right)+1-1\\ =\left(n^2+3n+1\right)^2-1\ge-1\left(C\right)\\ 27,\widehat{D}=360^0-130^0-100^0-70^0=60^0\left(C\right)\)
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