What is expand (7x(x^2+9))/((1+4x^2)(4-5x^3)) ?

The solution to expand (7x(x^2+9))/((1+4x^2)(4-5x^3)) is (7x^3+63x)/(4-5x^3+16x^2-20x^5)

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expand (7x(x^2+9))/((1+4x^2)(4-5x^3))

expand

\frac{7 x ( x ^{2} + 9 )}{( 1 + 4 x ^{2} ) ( 4 - 5 x ^{3} )}

\frac{7 x ^{3} + 63 x}{4 - 5 x ^{3} + 16 x ^{2} - 20 x ^{5}}

Solution steps

\frac{7 x ( x ^{2} + 9 )}{( 1 + 4 x ^{2} ) ( 4 - 5 x ^{3} )}

Expand

(1 + 4 x^{2}) (4 - 5 x^{3}) : 4 - 5 x^{3} + 16 x^{2} - 20 x^{5}

= \frac{7 x ( x ^{2} + 9 )}{4 - 5 x ^{3} + 16 x ^{2} - 20 x ^{5}}

Expand

7 x (x^{2} + 9) : 7 x^{3} + 63 x

= \frac{7 x ^{3} + 63 x}{4 - 5 x ^{3} + 16 x ^{2} - 20 x ^{5}}

12 e^{2 t} \cdot (3 e^{2 t} + 6 t e^{2 t})

\frac{1}{( s + 1 ) ( 2 s + 1 ) ( 3 s + 1 )}

\frac{( 3 x + 1 ) ( x + 2 )}{x - 1}

\frac{1}{( ( a + h ) ^{2} + 1 )}

(1 - \frac{δ}{R})^{2}

What is expand (7x(x^2+9))/((1+4x^2)(4-5x^3)) ?
The solution to expand (7x(x^2+9))/((1+4x^2)(4-5x^3)) is (7x^3+63x)/(4-5x^3+16x^2-20x^5)