Question

value of 5x-3x²+2(x-1) at x=1​

Answer 1

$5 {x}^{3} - 3 {x}^{2} + 2(x - 1) \\ \\ = > 5 {(1)}^{3} - 3 {(1)}^{2} + 2(1 - 1) \\ \\ = > 5 - 3 + 2 \times 0 \\ \\ = > 2$