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7.Binomial Theorem
easy
${({x^2} - x - 1)^{99}}$ ના સહગુણકનો સરવાળો મેળવો.
A
$1$
B
$0$
C
$-1$
D
એકપણ નહિ.
Solution
(c) Putting $x = 1$ in ${({x^2} – x – 1)^{99}}$
we get the sum of the coefficient of ${({x^2} – x – 1)^{99}}$
= ${({1^2} – 1 – 1)^{99}} = – 1$.
Standard 11
Mathematics