SOLUTION: the value of expression x^2 + y^2 + z^2 -xy -yz- zx ,if x= 97 ,y =98 , z=99
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Question 731473: the value of expression x^2 + y^2 + z^2 -xy -yz- zx ,if x= 97 ,y =98 , z=99
Found 2 solutions by MathLover1, lokesh mishra:
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!
the value of expression ,if ,, will be
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Answer by lokesh mishra(5) (Show Source): You can put this solution on YOUR website!
x^2 + y^2 + z^2 -xy - yz- zx = 1/2{(x-y)^2 + (y-z)^2 + (z-x)^2 }
= 1/2{(97-98)^2 + (98-99)^2 + (99-97)^2 } = 1/2 ( 1 + 1 + 4 ) = 6/2 = 3
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