Question

Factor the following trinomial: x^2+8x-9

Answer 1

Given expression is:

`x^2+8x-9`

Factorising it:

`\begin{gathered} x^2+8x-9 \\ \Rightarrow x^2+9x-x-9 \\ \Rightarrow x(x+9)-1(x+9) \\ \Rightarrow(x+9)(x-1) \end{gathered}`

So the factor of given expression is: (x+9)(x-1).