Question

Find the indicated sum.(5x3 + 2x – 10) + (5x2 - 4x + 6) + (2x3 – 3x² + 2)

Answer 1

we have the expression

`\mleft(5x^3+2x-10\mright)+5x^2-4x+6+2x^3-3x^2+2`

Group similar terms

`(5x^3+2x^3)+(5x^2-3x^2)+(2x-4x)+(10+6^{}+2)`

Combine like terms

`\begin{gathered} \mleft(8x^3\mright)+\mleft(2x^2\mright)+\mleft(-2x\mright)+\mleft(18\mright) \\ 8x^3+2x^2-2x+18 \end{gathered}`