book Maths Puzzle Numerical Ability

solve: 5-4(x-2)=3

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Plase help me with this problem


Graph: {{{ y=16x^2-24x+9}}}
I have been working on this problem for a week and I still can't figure it out. This is what I have so what am I doing wrong?

Let the function f be defined by f(x) = 1/(sqrt1-x