What is expand pi(1-x^2)^2 ?

The solution to expand pi(1-x^2)^2 is pix^4-2pix^2+pi

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expand pi(1-x^2)^2

expand

π (1 - x^{2})^{2}

π x^{4} - 2 π x^{2} + π

Solution steps

π (1 - x^{2})^{2}

(1 - x^{2})^{2} = 1 - 2 x^{2} + x^{4}

= π (x^{4} - 2 x^{2} + 1)

Distribute parentheses

= π 1 + π (- 2 x^{2}) + π x^{4}

Apply minus-plus rules

+ (- a) = - a

= 1 π - 2 π x^{2} + π x^{4}

Multiply:

1 π = π

= π - 2 π x^{2} + π x^{4}

Rewrite in standard form

= π x^{4} - 2 π x^{2} + π

(8 z) (x y)

\frac{d}{d t} ((x) (x - 2 y))

\frac{k}{( a - x ) ( b - x )}

\frac{e ^{- s}}{s ^{2} ( s + 1 )}

(e^{7 t} + 3)^{2}

What is expand pi(1-x^2)^2 ?
The solution to expand pi(1-x^2)^2 is pix^4-2pix^2+pi