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Sagot :
If rectangle has sides measuring (2x +7) units and (5x +9) units then expression that represents the area of the rectangle is [tex]10x^2+53x+63[/tex] and degree of this expression is 2 and we proved that it satisfy closure property .
what is a rectangle?
A quadrilateral with four right angles is called rectangle .
Given that sides are (2x+7) and (5x+9)
Hence area of rectangle can be calculated as
[tex](2x+7)(5x+9)\\\\2x(5x+9)+7(5x+9)\\\\10x^2+18x+35x+63\\\\10x^2+53x+63\\[/tex]
Now we can see that this is a second degree polynomial
We got polynomial [tex]10x^2+53x+63[/tex] by multiplying two polynomial (2x+7) and (5x+9) hence it's closure property .
If rectangle has sides measuring (2x +7) units and (5x +9) units then expression that represents the area of the rectangle is [tex]10x^2+53x+63[/tex] and degree of this expression is 2 and we proved that it satisfy closure property .
To learn more about rectangle visit :https://brainly.com/question/19819849
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