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21x^{2}+14
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21x^{2}+14
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\left(3x^{2}+2\right)\times 7
Add 4 and 3 to get 7.
21x^{2}+14
Use the distributive property to multiply 3x^{2}+2 by 7.
\left(3x^{2}+2\right)\times 7
Add 4 and 3 to get 7.
21x^{2}+14
Use the distributive property to multiply 3x^{2}+2 by 7.
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