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Addition of Polynomials

Simplify : 2...

Question

Simplify :
$(2 y^{3} + 3 y - 7) - (8 y - 6) + (4 y^{3} - 2 y + 1)$

6 y^{3} + 7 y

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y^{3} + y

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6 y^{3} - 7 y

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y^{3} - y

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Solution

The correct option is C $6 y^{3} - 7 y$
$(2 y^{3} + 3 y - 7) - (8 y - 6) + (4 y^{3} - 2 y + 1)$
$= 2 y^{3} + 3 y - 7 - 8 y + 6 + 4 y^{3} - 2 y + 1$
$= 6 y^{3} - 7 y$

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