Simplify y^2-4+(y^2+4y-2) - Math help

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$y^{2} - 4 + (y^{2} + 4 y - 2)$

Remove parentheses.

$y^{2} - 4 + y^{2} + 4 y - 2$

Add $y^{2}$ and $y^{2}$ .

$2 y^{2} - 4 + 4 y - 2$

Subtract $2$ from $- 4$ .

$2 y^{2} + 4 y - 6$

Simplify y^2-4+(y^2+4y-2)

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