3 years ago

Can anyone answer please I don't know what to do.

Mathematics

1 answer:

ZanzabumX [31]3 years ago

5 0

Answer: 2 7/10

Step-by-step explanation:

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Step-by-step explanation:

Area of the rectangle $=(x^4-100)$

$x^4-100=(x^2)^2-10^2\\$Applying difference of two squares: a^2-b^2=(a-b)(a+b)\\(x^2)^2-10^2=(x^2-10)(x^2+10)$

Since the length of a rectangle is 20 units more than its width.

$Width: x^2-10\\Length=x^2+10=x^2-10+20$

The correct option is therefore 1.

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