Add the following expression: $3 x^{2} + 5 x - 4$ and $8 x - 2 x^{2} + 11$

x^{2} + 13 x + 7

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y^{2} + 3 x - 7

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x^{2} + 13 x + 6

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y^{2} - 2 x + 7

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Solution

The correct option is A $x^{2} + 13 x + 7$
Adding $(3 x^{2} + 5 x - 4)$ and $(8 x - 2 x^{2} + 11)$
$3 x^{2} + 5 x - 4$
$- 2 x^{2} + 8 x + 11$

$x^{2} + 13 x + 7$

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Similar questions

2 x^{2} + 5 x - 1 + 8 x + x^{2} + 7 - 6 x + 3 - 3 x^{2}

: 2 x^{2} + 5 x - 1 + 8 x + x^{2} + 7 - 6 x + 3 - 3 x^{2}

2 x^{2} + 5 x - 1 + 8 x + x^{2} + 7 - 6 x + 3 - 3 x^{2}

Simplify each of the following and write as a single polynomial.

(i)

(ii)

(iii)

(iv)

(v)

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