Question

(9x^2+5x^2+11x)+(-2x^3+9x-8x^2)

Answer 1

• First step is to remove those unnecessary brackets :

`\longrightarrow\tt \: 9 {x}^(3) + 5 {x}^(2) + 11x - 2 {x}^(3) + 9x - 8 {x}^(2)`

• Combine the like terms :

`\longrightarrow \tt \: 9 {x}^(3) - 2 {x}^(3) + 5 {x}^(2) - 8 {x}^(2) + 11x + 9x`

`\longrightarrow \boxed{\tt \: 7 {x}^(3) - 3 {x}^(2) + 20x}`

• Our final answer is 7x^3 - 3x^2 + 20x .

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