Evaluate
2\left(x^{2}+3y^{2}-1\right)
Factor
2\left(x^{2}+3y^{2}-1\right)
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2x^{2}+2y^{2}-2+4y^{2}
Multiply y and y to get y^{2}.
2x^{2}+6y^{2}-2
Combine 2y^{2} and 4y^{2} to get 6y^{2}.
2\left(x^{2}+y^{2}-1+2yy\right)
Factor out 2.
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