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If 3.X+1C, +P2.x = 4.*P,XE N, then x is equalto(a)2 (b)3(c) 4 (d) of these. |
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Answer» 3.x+1C2 + 2P2.x = 4.xP2 3*x*(x+1)/1.2 + 2! *x = 4*x(x - 1) 3x^2 + 3x + 4x = 8x^2 - 8x 5x^2 - 15x = 0 5x(x - 3) = 0 x =/= 0 Therefore,x = 3 (b) is correct option |
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