What is expand pi(4y)^2-pi(y^2)^2 ?

The solution to expand pi(4y)^2-pi(y^2)^2 is -piy^4+16piy^2

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expand pi(4y)^2-pi(y^2)^2

expand

π (4 y)^{2} - π (y^{2})^{2}

- π y^{4} + 16 π y^{2}

Solution steps

π (4 y)^{2} - π (y^{2})^{2}

(4 y)^{2} = 4^{2} y^{2}

= 4^{2} π y^{2} - π (y^{2})^{2}

(y^{2})^{2} = y^{4}

= 4^{2} π y^{2} - π y^{4}

4^{2} = 16

= 16 π y^{2} - π y^{4}

Rewrite in standard form

= - π y^{4} + 16 π y^{2}

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

(a^{\frac{2}{3}} - x^{\frac{2}{3}})^{3}

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

(4 - 2 cos (θ))^{2}

(1 - sin (t))^{2}

What is expand pi(4y)^2-pi(y^2)^2 ?
The solution to expand pi(4y)^2-pi(y^2)^2 is -piy^4+16piy^2