SOLUTION: h(h-3)-2h=h(h-2)-12

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Question 284010: h(h-3)-2h=h(h-2)-12
Answer by checkley77(12844) About Me  (Show Source):
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h(h-3)-2h=h(h-2)-12
h^2-3h-2h=h^2-2h-12
h^2-h^2-5h+2h=-12
-3h=-12
h=-12/-3
h=4 ans.
Proof:
4(4-3)-2*4=4(4-2)-12
4*1-8=4*2-12
-4=8-12
-4=-4