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Ugo [173]
3 years ago
9

Select the correct answer. Which expression is equivalent to this polynomial? 9x^2 - 4

Mathematics
1 answer:
liberstina [14]3 years ago
3 0

Step-by-step explanation:

Given expression is :

9x^2-4

We can write it as :

(3x)^2-2^2

Now using identity : a^2-b^2=(a-b)(a+b)

Here, a = 3x and b = 2

So,

(3x)^2-2^2=(3x-2)(3x+2)

Hence, the given expression is equivalent to (3x - 2)(3x + 2) .

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