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Question

Factorise
x2(yz)+y2(zx)+z2(xy)

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Solution

Given : x2(yz)+y2(zx)+z2(xy)
Expanding the given expression, we have
=x2yx2z+y2zy2x+z2xz2y
Rearranging the above equation
=x2yx2zy2x+z2x+y2zz2y
=(x2yx2z)(y2xz2x)+(y2zz2y)
=x2(yz)x(y2z2)+yz(yz)
=x2(yz)x(yz)(y+z)+yz(yz)
Taking (yz) common
=(yz)[x2x(y+z)+yz]
=(yz)[x2xyxz+yz]
=(yz)[x(xy)z(xy)]
Taking (xy) common
=(yz)[(xz)(xy)]
=(xy)(yz)(xz)

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