0 Write down the binomial expansion of(1+y)⁸ simplifying all the terms. Use the substitution y=x-x2 in (a) to deduce the expansion of(1+x- x2), in ascending powers of x as far as the term in x. Find, by inspection, a value ofx such that I + x - x2 = 1.09 and hence 1 ? evaluate 1.098, correct to three decimal places.