exam Maths Puzzle Numerical Ability

the problem is 14-(2q+5)= -2q+9

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exam Other Question

Given:

y=-(x-2)^2
y=-(x^2-4x+4)
y=-x^2+4x-4
y=-(x^2-4x+4)
y=-x^2+4x-4

I have the following, is it correct? Thanks!

Vertex: (2,0)

Axis of Sym = X=2

Y-intercept
simpilfy (625x^4y)1/4 / 16xy^3)3/4

assume that all variabel are positive & multiply y^2/4 (y^-2/4 +6y^2/4)