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\left(-3\right)^{2}\left(a^{2}\right)^{2}\left(b^{2}\right)^{2}+\frac{1}{2}ab\left(-3ab\right)^{3}
Expand \left(-3a^{2}b^{2}\right)^{2}.
\left(-3\right)^{2}a^{4}\left(b^{2}\right)^{2}+\frac{1}{2}ab\left(-3ab\right)^{3}
To raise a power to another power, multiply the exponents. Multiply 2 and 2 to get 4.
\left(-3\right)^{2}a^{4}b^{4}+\frac{1}{2}ab\left(-3ab\right)^{3}
To raise a power to another power, multiply the exponents. Multiply 2 and 2 to get 4.
9a^{4}b^{4}+\frac{1}{2}ab\left(-3ab\right)^{3}
Calculate -3 to the power of 2 and get 9.
9a^{4}b^{4}+\frac{1}{2}ab\left(-3\right)^{3}a^{3}b^{3}
Expand \left(-3ab\right)^{3}.
9a^{4}b^{4}+\frac{1}{2}ab\left(-27\right)a^{3}b^{3}
Calculate -3 to the power of 3 and get -27.
9a^{4}b^{4}-\frac{27}{2}aba^{3}b^{3}
Multiply \frac{1}{2} and -27 to get -\frac{27}{2}.
9a^{4}b^{4}-\frac{27}{2}a^{4}bb^{3}
To multiply powers of the same base, add their exponents. Add 1 and 3 to get 4.
9a^{4}b^{4}-\frac{27}{2}a^{4}b^{4}
To multiply powers of the same base, add their exponents. Add 1 and 3 to get 4.
-\frac{9}{2}a^{4}b^{4}
Combine 9a^{4}b^{4} and -\frac{27}{2}a^{4}b^{4} to get -\frac{9}{2}a^{4}b^{4}.
\left(-3\right)^{2}\left(a^{2}\right)^{2}\left(b^{2}\right)^{2}+\frac{1}{2}ab\left(-3ab\right)^{3}
Expand \left(-3a^{2}b^{2}\right)^{2}.
\left(-3\right)^{2}a^{4}\left(b^{2}\right)^{2}+\frac{1}{2}ab\left(-3ab\right)^{3}
To raise a power to another power, multiply the exponents. Multiply 2 and 2 to get 4.
\left(-3\right)^{2}a^{4}b^{4}+\frac{1}{2}ab\left(-3ab\right)^{3}
To raise a power to another power, multiply the exponents. Multiply 2 and 2 to get 4.
9a^{4}b^{4}+\frac{1}{2}ab\left(-3ab\right)^{3}
Calculate -3 to the power of 2 and get 9.
9a^{4}b^{4}+\frac{1}{2}ab\left(-3\right)^{3}a^{3}b^{3}
Expand \left(-3ab\right)^{3}.
9a^{4}b^{4}+\frac{1}{2}ab\left(-27\right)a^{3}b^{3}
Calculate -3 to the power of 3 and get -27.
9a^{4}b^{4}-\frac{27}{2}aba^{3}b^{3}
Multiply \frac{1}{2} and -27 to get -\frac{27}{2}.
9a^{4}b^{4}-\frac{27}{2}a^{4}bb^{3}
To multiply powers of the same base, add their exponents. Add 1 and 3 to get 4.
9a^{4}b^{4}-\frac{27}{2}a^{4}b^{4}
To multiply powers of the same base, add their exponents. Add 1 and 3 to get 4.
-\frac{9}{2}a^{4}b^{4}
Combine 9a^{4}b^{4} and -\frac{27}{2}a^{4}b^{4} to get -\frac{9}{2}a^{4}b^{4}.