C the answer is C because if x=3 then that would make the 2 rectangles equal 6 and if you add 6 to 5 you get 11 which is how many cubes are in the other box
Answer:
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Step-by-step explanation:OKKK
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c,c/2,a+b/2,AE,DE are the answers
x² - 20 = 0
Using the quadratic formula
a = 1 b = 0 c = -20
So we have
Hope this helps you.