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Addition and Subtraction of Algebraic Expression

Simplify : 3...

Question

Simplify :
$(3 x^{2} - 2 x + 1) + (x^{2} + 5 x - 3) + (4 x^{2} + 8)$

8 x^{2} + 3 x + 6

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x^{2} + x

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x^{2} + x_{6}

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8 x^{2} + x + 9

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Solution

The correct option is B $8 x^{2} + 3 x + 6$
$(3 x^{2} - 2 x + 1) + (x^{2} + 5 x - 3) + (4 x^{2} + 8)$
$= 3 x^{2} - 2 x + 1 + x^{2} + 5 x - 3 + 4 x^{2} + 8$
$= 8 x^{2} + 3 x + 6$

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