The function f is given by f(x) = SQRT(2x − 5). Work out x when f(x) = 1.2
1.2 = SQRT(2x-5)square both sides1.2^2 = 2x -5 add 5 to both sides 1.2^2 + 5 = 2xdivide both sides by 2(1.2^2 + 5)/2 = x
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