What is expand-(21x^2+2)/((7x^3+2x-4)^2) ?

The solution to expand-(21x^2+2)/((7x^3+2x-4)^2) is -(21x^2+2)/(49x^6+28x^4-56x^3+4x^2-16x+16)

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expand-(21x^2+2)/((7x^3+2x-4)^2)

expand

- \frac{21 x ^{2} + 2}{( 7 x ^{3} + 2 x - 4 ) ^{2}}

- \frac{21 x ^{2} + 2}{49 x ^{6} + 28 x ^{4} - 56 x ^{3} + 4 x ^{2} - 16 x + 16}

Solution steps

- \frac{21 x ^{2} + 2}{( 7 x ^{3} + 2 x - 4 ) ^{2}}

(7 x^{3} + 2 x - 4)^{2} = 49 x^{6} + 28 x^{4} - 56 x^{3} + 4 x^{2} - 16 x + 16

= - \frac{21 x ^{2} + 2}{49 x ^{6} + 28 x ^{4} - 56 x ^{3} + 4 x ^{2} - 16 x + 16}

e^{4 x^{2} + 4 x + 3} (8 x + 4) \cdot cos (e^{4 x^{2} + 4 x + 3})

\frac{2 ( x + y )}{1 + 2 x}

(e^{x} - e^{2 x}) (10 e^{2 x} + 4 e^{x}) (e^{x} - 4 e^{2 x})

\frac{( 5 x ^{2} - 6 x + 7 )}{( x ^{2} + 1 ) ( x - 1 )}

- 30 (3)

What is expand-(21x^2+2)/((7x^3+2x-4)^2) ?
The solution to expand-(21x^2+2)/((7x^3+2x-4)^2) is -(21x^2+2)/(49x^6+28x^4-56x^3+4x^2-16x+16)