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624=h^2-h, whats the answer of h and how do you get it?

 Apr 7, 2016
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Solve for h:
624 = h^2-h

 

624 = h^2-h is equivalent to h^2-h = 624:
h^2-h = 624

 

Add 1/4 to both sides:
h^2-h+1/4 = 2497/4

 

Write the left hand side as a square:
(h-1/2)^2 = 2497/4

 

Take the square root of both sides:
h-1/2 = sqrt(2497)/2 or h-1/2 = -sqrt(2497)/2

 

Add 1/2 to both sides:
h = 1/2+sqrt(2497)/2 or h-1/2 = -sqrt(2497)/2

 

Add 1/2 to both sides:
Answer: |  h = 1/2+sqrt(2497)/2                or               h = 1/2-sqrt(2497)/2

 Apr 7, 2016

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