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Softa [21]
3 years ago
13

Use the difference of squares identity to write this polynomial expression in factored form: 9x2 − 49.

Mathematics
2 answers:
qwelly [4]3 years ago
7 0
9x^2-49
It equals:
<span>(<span><span>3x</span>+7</span>)</span><span>(<span><span>3x</span>−7</span><span>)
Hope this helps!
</span></span>
Kisachek [45]3 years ago
5 0

Answer:

(3x+7)(3x-7)

Step-by-step explanation:

Use the difference of squares identity to write this polynomial expression in factored form:  9x^2-49

Difference of square formula is

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

9 can be written as 3^2

49 can be written as 7^2

9x^2-49

(3x)^2-7^2

The value of 'a' is 3x  and b is 7

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

(3x)^2-7^2=(3x+7)(3x-7)

(3x+7)(3x-7)

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