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If x+y)2-z2=8 y+z)2-y2=10 x+z)2-x2=7 thenx+y+z=? |
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Answer» +5 or -5 Step-by-step EXPLANATION: add all there equations them you will GET (X+y+z)^2 = 25 hence, x+y+z = √25 X+y+z = 5 or -5 |
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