Question

Is 9x^3y6 -1 a difference of two squares? explain why?

Answer 1

Answer:

WHEN THE SUM of two numbers multiplies their difference --

(a + b)(a − b)

-- then the product is the difference of their squares:

(a + b)(a − b) = a2 − b2

For, the like terms will cancel. (Lesson 16.)

Symmetrically, the difference of two squares can be factored:

x2 − 25 = (x + 5)(x − 5)

x2 is the square of x.  25 is the square of 5.

Step-by-step explanation:

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