What is expand (x^my^m+1)(x^my^m-1) ?

The solution to expand (x^my^m+1)(x^my^m-1) is x^{2m}y^{2m}-1

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expand (x^my^m+1)(x^my^m-1)

expand

(x^{m} y^{m} + 1) (x^{m} y^{m} - 1)

x^{2 m} y^{2 m} - 1

Solution steps

(x^{m} y^{m} + 1) (x^{m} y^{m} - 1)

Apply Difference of Two Squares

(x^{m} y^{m} + 1) (x^{m} y^{m} - 1) : x^{2 m} y^{2 m} - 1

= x^{2 m} y^{2 m} - 1

\frac{1}{3} x

(x + 9) (x + 9)

\frac{10}{1000}

lo g_{10} (120)

3 x - 3 x

What is expand (x^my^m+1)(x^my^m-1) ?
The solution to expand (x^my^m+1)(x^my^m-1) is x^{2m}y^{2m}-1