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dybincka [34]
3 years ago
10

Is this a difference of squares? x2−30

Mathematics
1 answer:
rodikova [14]3 years ago
8 0

we know that

<u>The difference of squares</u> is two terms that are squared and separated by a subtraction sign

so

a^{2}-b^{2}=(a+b)*(a-b)

<u>Part a) </u>

we have

x^{2}-30

we know that

\sqrt{30} -------> is not a integer

so

The number 30 is not a perfect square number

therefore

<u>the answer part a) is the option</u>

4. No because the 30 is not a perfect square number

<u>Part b) </u>

we have

(16x^{2}-25)

we know that

16x^{2}=(4x)^{2} \\25=5^{2}

so

(16x^{2}-25)=(4x)^{2}-5^{2}=(4x+5)*(4x-5)

therefore

<u>the answer part b) is the option</u>

2. (4x−5)(4x+5)


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