What is expand (x^2-y^2)(x^2-y^2) ?

The solution to expand (x^2-y^2)(x^2-y^2) is x^4-x^2y^2-y^2x^2+y^4

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expand (x^2-y^2)(x^2-y^2)

expand

(x^{2} - y^{2}) (x^{2} - y^{2})

x^{4} - x^{2} y^{2} - y^{2} x^{2} + y^{4}

Solution steps

(x^{2} - y^{2}) (x^{2} - y^{2})

Apply FOIL method

(x^{2} - y^{2}) (x^{2} - y^{2}) : x^{4} - x^{2} y^{2} - y^{2} x^{2} + y^{4}

= x^{4} - x^{2} y^{2} - y^{2} x^{2} + y^{4}

\frac{( 6 - x - 2 ) ( 3 - x + 1 )}{- x + 2}

\frac{18}{x ( x ^{2} + 1 )}

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

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

\frac{8 x + 4 + x ^{2}}{3 x ^{3} ( 2 x + 1 )}

What is expand (x^2-y^2)(x^2-y^2) ?
The solution to expand (x^2-y^2)(x^2-y^2) is x^4-x^2y^2-y^2x^2+y^4