Mathematics, 10.06.2020 07:57, jessb4110
The length of a rectangle is 20 units more than its width. The area of the rectangle is x4β100.
Which expression represents the width of the rectangle?
1. x2β10 because the area expression can be rewritten as (x2β10)(x2+10) which equals (x2β10)((x2β10)+20).
2. x2+10 because the area expression can be rewritten as (x2+10)(x2β10) which equals (x2+10)((x2+10)β20).
3. x2β30 because the area expression can be rewritten as (x2+10)(x2β10) which equals (x2+10)((x2β30)+20).
4. x2+30 because the area expression can be rewritten as (x2β10)(x2+10) which equals (x2β10)((x2+30)β20).
Answers: 2
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The length of a rectangle is 20 units more than its width. The area of the rectangle is x4β100.
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