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(i) x: a =y: b = 2:0907, 21314 Pont 29,+49 + 2 = (x+y+z),c2 (a + b + c)2'1262 |
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Answer» I have proved the relationship below. x/a + y/b + z/c=d; x=da;, y=db; z=dc;____________________(1); x^2/ a^2+y2/b^× + z^2/c^2=( da)^2/a^2 + (mb)^2/ b^2+( mc)^2/c^2= m^2a^3/a^2+ m^3b^3/ b^2+ m^3c^3/ b^2= m^3a+m^3b+ m^3c=m^3(a+b+c)_______(2); ( x+y+z)^3/(a+b+c)^2=( da+dm+dc)^3/(a+b+c)2 = d^3( a+b+c)^3/( a+b+c)^2==m^3(a+b+c)____(3) |
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