What is expand b/((1-a)(1-b)^2) ?

The solution to expand b/((1-a)(1-b)^2) is b/(1-2b+b^2-a+2ba-b^2a)

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expand b/((1-a)(1-b)^2)

expand

\frac{b}{( 1 - a ) ( 1 - b ) ^{2}}

\frac{b}{1 - 2 b + b ^{2} - a + 2 ba - b ^{2} a}

Solution steps

\frac{b}{( 1 - a ) ( 1 - b ) ^{2}}

(1 - b)^{2} = 1 - 2 b + b^{2}

= \frac{b}{( - a + 1 ) ( b ^{2} - 2 b + 1 )}

Expand

(1 - a) (1 - 2 b + b^{2}) : 1 - 2 b + b^{2} - a + 2 ba - b^{2} a

= \frac{b}{1 - 2 b + b ^{2} - a + 2 ba - b ^{2} a}

(2, - 1, 1) x (- 3, 1, 1)

(e^{j} - e^{- j})^{2}

l im x \Rightarrow 1 (4 x^{2} - 7 x + 5)

(x + Δ x)^{2} + 1

2 x (x - 3 π + 2 π^{2})

What is expand b/((1-a)(1-b)^2) ?
The solution to expand b/((1-a)(1-b)^2) is b/(1-2b+b^2-a+2ba-b^2a)