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Status: Waiting for your answers.

Given:

(a + b)4 = 4C0a4 + 4C1a3b + 4C2a2b2 + 4C3ab3 + 4C4b4

Expand:

(4x - 1)4

Write the correct final coefficients.

(4x - 1)4 = x4 + x3 + x2 + x +