What is expand (9y,-4x)(9y,+4x) ?

The solution to expand (9y,-4x)(9y,+4x) is (9y,)^2-(4x)^2

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expand (9y,-4x)(9y,+4x)

expand

(9 y, - 4 x) (9 y, + 4 x)

(9 y,)^{2} - (4 x)^{2}

Solution steps

(9 y, - 4 x) (9 y, + 4 x)

= (9, y - 4 x) (9, y + 4 x)

Apply Difference of Two Squares Formula:

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

a = 9 y,, b = 4 x

= (9 y,)^{2} - (4 x)^{2}

\frac{17 + 129}{2}

- \frac{sin ( x )}{( x - π ) ( 1 - cos ( x ) )}

\frac{11 s ^{2} - 4}{s ^{2} ( s ^{4} - 15 s ^{2} + 4 )}

(67 - 55) (6 7 + 55)

What is expand (9y,-4x)(9y,+4x) ?
The solution to expand (9y,-4x)(9y,+4x) is (9y,)^2-(4x)^2