if x,y,z,are in A.P., then find the value of(x+y-z)(y+z-x)
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Answered by
0
x2 +y2+z2+2xy+2yz+2zx
shashwatmishra673:
Sorry but answer is not correct
Answered by
5
given d=y-x=z-y
then
(x +y -z)(y+z-x)
(x-d)(z+d)
(y-2d)(y+2d)
y^2 -4d^2
Sorry but answer is8yz-3y^2-4z^2
change y^2-4d^2 where d =z-y
then y^2-4(z-y)*(z-y)
then y^2-4(z^2+y^2-2zy)
solve it then it comes 8yz-3y^2-4z^2
your answer
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