Question

2x4 – 5x3 + 7x – 3 when x = 2.-​

Answer 1

$p(x) = {2x}^{4} - {5x}^{3} + 7x - 3 \\ x = 2 \\ \\ p(2) = 2 {(2)}^{4} - 5 {(2)}^{3} + 7(2) - 3 \\ = 2(16) - 5(8) + 14 - 3 \\ = 32 - 40 + 14 - 3 \\ = 46 - 43 \\ = 3$

So,

2x⁴-5x³+7x-3 when x = 2 is 3