Solve [4/5a^{3}b^{4}c:(-2/5ab^{2})]^{2}+(-2a^{2}bc)^{2}*(-7b^2)+23a^4b^4c^2

$$[ \frac { 4 } { 5 } a ^ { 3 } b ^ { 4 } c : ( - \frac { 2 } { 5 } a b ^ { 2 } ) ] ^ { 2 } + ( - 2 a ^ { 2 } b c ) ^ { 2 } \cdot ( - 7 b ^ { 2 } ) + 23 a ^ { 4 } b ^ { 4 } c ^ { 2 }$$

Evaluate

$$-c^{2}\left(ab\right)^{4}$$

Solution Steps

Cancel out ab^{2} in both numerator and denominator.

$$\left(\frac{\frac{4}{5}ca^{2}b^{2}}{-\frac{2}{5}}\right)^{2}+\left(-2a^{2}bc\right)^{2}\left(-7\right)b^{2}+23a^{4}b^{4}c^{2}$$

Divide \frac{4}{5}ca^{2}b^{2} by -\frac{2}{5} by multiplying \frac{4}{5}ca^{2}b^{2} by the reciprocal of -\frac{2}{5}.

$$\left(\frac{\frac{4}{5}ca^{2}b^{2}\times 5}{-2}\right)^{2}+\left(-2a^{2}bc\right)^{2}\left(-7\right)b^{2}+23a^{4}b^{4}c^{2}$$

Multiply \frac{4}{5} and 5 to get 4.

$$\left(\frac{4ca^{2}b^{2}}{-2}\right)^{2}+\left(-2a^{2}bc\right)^{2}\left(-7\right)b^{2}+23a^{4}b^{4}c^{2}$$

Divide 4ca^{2}b^{2} by -2 to get -2ca^{2}b^{2}.

$$\left(-2ca^{2}b^{2}\right)^{2}+\left(-2a^{2}bc\right)^{2}\left(-7\right)b^{2}+23a^{4}b^{4}c^{2}$$

Expand \left(-2ca^{2}b^{2}\right)^{2}.

$$\left(-2\right)^{2}c^{2}\left(a^{2}\right)^{2}\left(b^{2}\right)^{2}+\left(-2a^{2}bc\right)^{2}\left(-7\right)b^{2}+23a^{4}b^{4}c^{2}$$

To raise a power to another power, multiply the exponents. Multiply 2 and 2 to get 4.

$$\left(-2\right)^{2}c^{2}a^{4}\left(b^{2}\right)^{2}+\left(-2a^{2}bc\right)^{2}\left(-7\right)b^{2}+23a^{4}b^{4}c^{2}$$

To raise a power to another power, multiply the exponents. Multiply 2 and 2 to get 4.

$$\left(-2\right)^{2}c^{2}a^{4}b^{4}+\left(-2a^{2}bc\right)^{2}\left(-7\right)b^{2}+23a^{4}b^{4}c^{2}$$

Calculate -2 to the power of 2 and get 4.

$$4c^{2}a^{4}b^{4}+\left(-2a^{2}bc\right)^{2}\left(-7\right)b^{2}+23a^{4}b^{4}c^{2}$$

Expand \left(-2a^{2}bc\right)^{2}.

$$4c^{2}a^{4}b^{4}+\left(-2\right)^{2}\left(a^{2}\right)^{2}b^{2}c^{2}\left(-7\right)b^{2}+23a^{4}b^{4}c^{2}$$

To raise a power to another power, multiply the exponents. Multiply 2 and 2 to get 4.

$$4c^{2}a^{4}b^{4}+\left(-2\right)^{2}a^{4}b^{2}c^{2}\left(-7\right)b^{2}+23a^{4}b^{4}c^{2}$$

Calculate -2 to the power of 2 and get 4.

$$4c^{2}a^{4}b^{4}+4a^{4}b^{2}c^{2}\left(-7\right)b^{2}+23a^{4}b^{4}c^{2}$$

Multiply 4 and -7 to get -28.

$$4c^{2}a^{4}b^{4}-28a^{4}b^{2}c^{2}b^{2}+23a^{4}b^{4}c^{2}$$

To multiply powers of the same base, add their exponents. Add 2 and 2 to get 4.

$$4c^{2}a^{4}b^{4}-28a^{4}b^{4}c^{2}+23a^{4}b^{4}c^{2}$$

Combine 4c^{2}a^{4}b^{4} and -28a^{4}b^{4}c^{2} to get -24c^{2}a^{4}b^{4}.

$$-24c^{2}a^{4}b^{4}+23a^{4}b^{4}c^{2}$$

Combine -24c^{2}a^{4}b^{4} and 23a^{4}b^{4}c^{2} to get -c^{2}a^{4}b^{4}.

$$-c^{2}a^{4}b^{4}$$

Expand

$$-c^{2}\left(ab\right)^{4}$$

Solution Steps

Cancel out ab^{2} in both numerator and denominator.

$$\left(\frac{\frac{4}{5}ca^{2}b^{2}}{-\frac{2}{5}}\right)^{2}+\left(-2a^{2}bc\right)^{2}\left(-7\right)b^{2}+23a^{4}b^{4}c^{2}$$

Divide \frac{4}{5}ca^{2}b^{2} by -\frac{2}{5} by multiplying \frac{4}{5}ca^{2}b^{2} by the reciprocal of -\frac{2}{5}.

$$\left(\frac{\frac{4}{5}ca^{2}b^{2}\times 5}{-2}\right)^{2}+\left(-2a^{2}bc\right)^{2}\left(-7\right)b^{2}+23a^{4}b^{4}c^{2}$$

Multiply \frac{4}{5} and 5 to get 4.

$$\left(\frac{4ca^{2}b^{2}}{-2}\right)^{2}+\left(-2a^{2}bc\right)^{2}\left(-7\right)b^{2}+23a^{4}b^{4}c^{2}$$

Divide 4ca^{2}b^{2} by -2 to get -2ca^{2}b^{2}.

$$\left(-2ca^{2}b^{2}\right)^{2}+\left(-2a^{2}bc\right)^{2}\left(-7\right)b^{2}+23a^{4}b^{4}c^{2}$$

Expand \left(-2ca^{2}b^{2}\right)^{2}.

$$\left(-2\right)^{2}c^{2}\left(a^{2}\right)^{2}\left(b^{2}\right)^{2}+\left(-2a^{2}bc\right)^{2}\left(-7\right)b^{2}+23a^{4}b^{4}c^{2}$$

To raise a power to another power, multiply the exponents. Multiply 2 and 2 to get 4.

$$\left(-2\right)^{2}c^{2}a^{4}\left(b^{2}\right)^{2}+\left(-2a^{2}bc\right)^{2}\left(-7\right)b^{2}+23a^{4}b^{4}c^{2}$$

To raise a power to another power, multiply the exponents. Multiply 2 and 2 to get 4.

$$\left(-2\right)^{2}c^{2}a^{4}b^{4}+\left(-2a^{2}bc\right)^{2}\left(-7\right)b^{2}+23a^{4}b^{4}c^{2}$$

Calculate -2 to the power of 2 and get 4.

$$4c^{2}a^{4}b^{4}+\left(-2a^{2}bc\right)^{2}\left(-7\right)b^{2}+23a^{4}b^{4}c^{2}$$

Expand \left(-2a^{2}bc\right)^{2}.

$$4c^{2}a^{4}b^{4}+\left(-2\right)^{2}\left(a^{2}\right)^{2}b^{2}c^{2}\left(-7\right)b^{2}+23a^{4}b^{4}c^{2}$$

To raise a power to another power, multiply the exponents. Multiply 2 and 2 to get 4.

$$4c^{2}a^{4}b^{4}+\left(-2\right)^{2}a^{4}b^{2}c^{2}\left(-7\right)b^{2}+23a^{4}b^{4}c^{2}$$

Calculate -2 to the power of 2 and get 4.

$$4c^{2}a^{4}b^{4}+4a^{4}b^{2}c^{2}\left(-7\right)b^{2}+23a^{4}b^{4}c^{2}$$

Multiply 4 and -7 to get -28.

$$4c^{2}a^{4}b^{4}-28a^{4}b^{2}c^{2}b^{2}+23a^{4}b^{4}c^{2}$$

To multiply powers of the same base, add their exponents. Add 2 and 2 to get 4.

$$4c^{2}a^{4}b^{4}-28a^{4}b^{4}c^{2}+23a^{4}b^{4}c^{2}$$

Combine 4c^{2}a^{4}b^{4} and -28a^{4}b^{4}c^{2} to get -24c^{2}a^{4}b^{4}.

$$-24c^{2}a^{4}b^{4}+23a^{4}b^{4}c^{2}$$

Combine -24c^{2}a^{4}b^{4} and 23a^{4}b^{4}c^{2} to get -c^{2}a^{4}b^{4}.

$$-c^{2}a^{4}b^{4}$$