alleryThe expansion of (x + 1)^4 is
Ax^4 + 4x³ + 6x² + 6x + 1
Bx^4 + 4x³ + 6x² + 4x + 1
Cx^4 + 4x³ + 4x² + 4x + 1
Dx^4 + 6x³ + 4x² + 6x + 1
Answer & Solution
Correct answer: B. x^4 + 4x³ + 6x² + 4x + 1
Coefficients for n = 4 are 1, 4, 6, 4, 1 (Pascal row 4).
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