Evaluate
\left(x+2y\right)\left(3x+y\right)-x^{2}
Expand
2x^{2}+7xy+2y^{2}
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3x^{2}+7xy+2y^{2}-x^{2}
Use the distributive property to multiply 3x+y by x+2y and combine like terms.
2x^{2}+7xy+2y^{2}
Combine 3x^{2} and -x^{2} to get 2x^{2}.
3x^{2}+7xy+2y^{2}-x^{2}
Use the distributive property to multiply 3x+y by x+2y and combine like terms.
2x^{2}+7xy+2y^{2}
Combine 3x^{2} and -x^{2} to get 2x^{2}.
Examples
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Limits
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