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Which statement about the coefficients in the expansion… | StemPy Lab
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Which statement about the coefficients in the expansion of (a + b)ⁿ is true for every n?
Mathematics
Easy
High School (11–12)
Algebra › Binomial Theorem
Algebra › Polynomials
Algebra › Algebraic Identities and Factorisation
Board Exam
A-Level
IB
Created by
StemPy Lab
Which statement about the coefficients in the expansion of
(
a
+
b
)
n
(a + b)^n
(
a
+
b
)
n
is true for every
n
n
n
?
The coefficient of the
2
2
2
nd term is always
n
−
1
n - 1
n
−
1
The coefficients keep increasing from the first term to the last
The coefficient of the
3
3
3
rd term equals the coefficient of the
3
3
3
rd term from the end
The coefficients of the
2
2
2
nd and
3
3
3
rd terms are always equal
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Expanding (3x² - 1/x)⁸, a student looks for the term that carries x⁷. What number is its coefficient? →
More on
Algebra › Binomial Theorem
Algebra › Polynomials
Algebra › Algebraic Identities and Factorisation
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