What is expand (9e-8f)(9e+8f) ?

The solution to expand (9e-8f)(9e+8f) is -64f^2+81e^2

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expand (9e-8f)(9e+8f)

expand

(9 e - 8 f) (9 e + 8 f)

- 64 f^{2} + 81 e^{2}

Solution steps

(9 e - 8 f) (9 e + 8 f)

Apply Difference of Two Squares Formula:

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

a = 9 e, b = 8 f

= (9 e)^{2} - (8 f)^{2}

Simplify

(9 e)^{2} - (8 f)^{2} : - 64 f^{2} + 81 e^{2}

= - 64 f^{2} + 81 e^{2}

1 + 2 (x - \frac{π}{4})

\frac{4 ( x + 3 ) ( x - 3 )}{( x + 2 ) ( x - 4 )}

(x^{2} + \frac{1}{x})^{6}

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

2 (2 - 3) 2 + 3

What is expand (9e-8f)(9e+8f) ?
The solution to expand (9e-8f)(9e+8f) is -64f^2+81e^2