19-10-2014
Mathematics

Answered

Select the approximate values of x that are solutions to f(x) = 0, wheref(x) = -9x^2 + 7x + 2

Answer :

19-10-2014

f(x) = -9x^2 + 7x + 2
Factorising we get:

f(x) = (x + 1) (-9x + 2)

The solutions are x = -1 and 2/9ths

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