3 years ago

Which of the following is the product of (3x − 5) and (3x + 5)?

Mathematics

1 answer:

Whitepunk [10]3 years ago

4 0

Answer:

Step-by-step explanation:

These binomials make up the difference of squares.

3x * 3x = 9x^2

3x * 5 = 15x

-5 * 3x = - 15x

-5 * 5 = - 25

Notice the 2nd and 3rd terms. They are equal except that one is plus and the other minus. That means they cancel. You are left with

9x^2 - 25

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