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lora16 [44]
3 years ago
13

Which is equivalent to (9y2 – 4x)(9y2 + 4x), and what type of special product is it?

Mathematics
1 answer:
QveST [7]3 years ago
7 0
This is an example of the difference of squares.

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

So to find the product of <span>(9y</span>²<span> – 4x)(9y</span>²<span> + 4x), we use the formula for the difference of squares.

</span>(9y^2 - 4x)(9y^2 + 4x)\\\\=(9y^2)^2 -(4x)^2\\\\=\boxed{\bf{81y^4 - 16x^2}}<span>
</span>
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3 years ago
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