If \(3x-1=11\), what is the value of \(x^{2}+x\) ?

(E) 20

Explanation

3x - 1 = 11
3x = 11 + 1 = 12
\(x=\frac{12}{4}\)
\(x^{2}+x=4^{2}+4=16+4=20\)

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