Simplify the expression. If the expression cannot be simplified, so state.
-$\left[ - 10 x ^ { 2 } + \left( 3 x ^ { 2 } + 6 \right) \right] + \left[ \left( 9 x ^ { 2 } + \left( 9 + 10 x ^ { 2 } \right) \right) - 2 x ^ { 2 } \right]$
A) $10 x ^ { 2 } + 15$
B) $- 16 x ^ { 2 } - 15$
C) $- 24 x ^ { 2 } - 3$
D) $- 28 x ^ { 2 } - 3$

Question

Quizplus · Accepted Answer

First, simplify the expression inside each set of brackets: $[-10x^2 + (3x^2 + 6)] + [(9x^2 + (9 + 10x^2)) - 2x^2]$. This simplifies to $[-10x^2 + 3x^2 + 6] + [9x^2 + 9 + 10x^2 - 2x^2]$, which further simplifies to $[-7x^2 + 6] + [17x^2 + 9]$. Combining like terms gives $10x^2 + 15$.

Simplify the Expression A) 10x2+1510 x ^ { 2 } + 1510x2+15

Simplify the Expression A) $10 x ^ { 2 } + 15$