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Christopher
Lv 5
The expansion of (1+x)⁸ is arranged in ascending powers of x, if the value of 4th term is 7, find the value of x.?
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- Mike GLv 72 years agoFavorite Answer
Binomial expansion
1 + 8C1*x + 8C2*x^2+8C3*x^3......
4th term = 56x^3 = 7
x = ³√[7/56] = ³√ [1/8]
x = 1/2
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