groovylana groovylana

30-09-2016
Mathematics

Answered

Suppose two sides of a square are given as x + 3 and 12 - x. What is its area?

Verified Answer :

Karima6 Karima6

30-09-2016

Then you'd do this:

(x + 3)(12 - x)
= 12x - x^2 + 12x - 3x
= 21x - x^2

Hope it helped :)

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Moneyeveryday247 Moneyeveryday247

30-09-2016

The area is 15. Since squares have equal side lengths, you just have to find the value of x so that the answer is the same. x=4.5
4.5 + 3 = 12 - 4.5 = 7.5 Then all you have to do is multiply it by 2. That will give you 15. I hope you understand.

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