Question

if x = 1
find - x^2 + x^3 + 2x^2​

Answer 1

${x}^{2} + {x}^{3} + {2x}^{2} \\ = ( {1})^{2} + ( {1})^{3} + {2x}^{2} \\ = 1 + 1 + 2 \\ = 4$

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