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slimt3763
13.05.2021 •
Mathematics
Points Y and Z are points of tangency. Find the value of c.
202 + 9c + 6
Y
x Х
'w
90 + 14
Z
C=
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Ответ:
Hi! :)
In this case, we have to square both sides of the equation. When we square the left side, we will get x^2 + 81, because square root squared denies one another, and for the right side, we have to square the binomial, like this:
(x+10)^2 = x^2 + 20x + 100
So the correct answer is the last one : x^2 + 81 = x^2 + 20x + 100.
Hope this helps!