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I need help again in geometry

I need help again in geometry-example-1

1 Answer

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Let
x1=a
x2=a+4
xm=(x1+x2)/2----------------- > The formula of the midpoint


The x coordinate of point P= (a+(a+4))/2=(2a+4)/2=a+2

the answer is (a+2)
User KRouane
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