Type the correct answer in each box.
Consider the difference of squares identity:
a2 - 62 = (a + b)(a - b).
For the polynomial 9x2 - 49,
and b =
a =
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Step-by-step explanation:

The given polynomial is

We rewrite the polynomial as a difference f two squares.

We need to compare this to the difference of squares identity:

Putting a=3x and b=7, we have :

Therefore

2

step-by-step explanation:

1+1=2