Question

(8x + 9) ( 3x^2 + x - 1 )

Answer 1

Expansion of Algebraic Expressions.

`\begin{gathered} (8x+9)(3x^2+x-1) \\ 8x(3x^2+x-1)+9(3x^2+x-1) \\ 24x^3+8x^2-8x+27x^2+9x-9 \\ \text{Collecting like terms, we get,} \\ 24x^3+8x^2+27x^2-8x+9x-9 \\ 24x^3+35x^2+x-9 \end{gathered}`

The correct answer is

`24x^3+35x^2+x-9`