x2+y2+z2=24 nd xy+yz+zx=20 find
x+y+z
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Answered by
11
Hey !
Here is your answer !
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==>( x + y + z )2 = x2 + y2 + z2 + 2 ( xy + yz + za )
==> ( x + y + z )2 = 24 + 2 × 20
==> ( x + y + z )2 = 24 + 40
==> x + y + z = √ 64
==> x + y + z = 8 ( Answer )
________________
Hope it helps !!
Here is your answer !
________________
==>( x + y + z )2 = x2 + y2 + z2 + 2 ( xy + yz + za )
==> ( x + y + z )2 = 24 + 2 × 20
==> ( x + y + z )2 = 24 + 40
==> x + y + z = √ 64
==> x + y + z = 8 ( Answer )
________________
Hope it helps !!
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32
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