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TMUAmockz Set 1 Paper 1 · Q8

Paper 1Algebra

The coefficient of x2x^2 in the expansion of

(1+2x+2x2)3(1+2x+2x^2)^3

is equal to one third of the coefficient of x2x^2 in the expansion of

(1+mx)4.(1+mx)^4.

Find all possible values of the constant mm.

Am=3m=3 only
Bm=±3m=\pm3
Cm=±6m=\pm\sqrt6
Dm=±3m=\pm\sqrt3
Em=±2m=\pm2
Fm=±2m=\pm\sqrt2

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