Question

x^3+5x^2-9x-45 let x = 1​

Answer 1

Step-by-step explanation:

I hope this answer is write

Answer 2

$let \: x = 1 \\ = {x}^{3} + 5 {x}^{2} - 9x - 45 \\ = {1}^{3} + 5 \times {1}^{2} - 9 \times 1 - 45 \\ = 1 + 5 - 9 - 45 \\ = - 48 \\ \\ \\ \\ \\ \\ hope \: that \: it \: will \: help \: u$