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21x^{2}-17
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21x^{2}-17
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6x^{2}+3+5\left(3x^{2}-4\right)
Use the distributive property to multiply 3 by 2x^{2}+1.
6x^{2}+3+15x^{2}-20
Use the distributive property to multiply 5 by 3x^{2}-4.
21x^{2}+3-20
Combine 6x^{2} and 15x^{2} to get 21x^{2}.
21x^{2}-17
Subtract 20 from 3 to get -17.
6x^{2}+3+5\left(3x^{2}-4\right)
Use the distributive property to multiply 3 by 2x^{2}+1.
6x^{2}+3+15x^{2}-20
Use the distributive property to multiply 5 by 3x^{2}-4.
21x^{2}+3-20
Combine 6x^{2} and 15x^{2} to get 21x^{2}.
21x^{2}-17
Subtract 20 from 3 to get -17.
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Limits
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