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Pls help with this 4. Consider the expansion of (2x4 + x2) 12 k , k + 0. The coefficient of the term in x40

Pls help with this

4. Consider the expansion of (2x4 + x2) 12 k , k + 0. The coefficient of the term in x40 is five times the coefficient in the term x38. Find k. [6]

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