Combine like terms.
-$$9 x ^ { 2 } + 6 x - 4 + 2 x + 9 + 8 x ^ { 2 }$$
A) $x ^ { 2 } + 11 x + 15$
B) $17 x ^ { 2 } + 8 x + 5$
C) $17 x ^ { 4 } + 8 x ^ { 2 } + 5$
D) $30 x ^ { 3 }$

Question

Quizplus · Accepted Answer

To combine like terms, add coefficients of terms with the same variable and exponent. For $x^2$ terms: $9x^2 + 8x^2 = 17x^2$. For $x$ terms: $6x + 2x = 8x$. For constant terms: $-4 + 9 = 5$. Thus, the simplified expression is $17x^2 + 8x + 5$.

Combine Like Terms 9x2+6x−4+2x+9+8x29 x ^ { 2 } + 6 x - 4 + 2 x + 9 + 8 x ^ { 2 }9x2+6x−4+2x+9+8x2

Combine Like Terms $9 x ^ { 2 } + 6 x - 4 + 2 x + 9 + 8 x ^ { 2 }$