Question

find the value of polynomial p(x)=2x³+3x-5 for x=2​

Answer 1

Answer:

$p(x) = 2 {x}^{2} \times 3x - 5$

$for \: x = 2$

$p(2) = 2 ({2}^{3}) + 3(2) - 5 \\ = 2(8) + 6 - 5 \\ = 16 + 6 - 5 \\ = 16 + 1 \\ = 17$

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