exam Maths Puzzle Numerical Ability

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4 to the ninth power times (-1/4)to the fifth power

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exam Other Question

(16y‾¾ /t½)‾2 Please help me simplify this problem?
Thanks a Bunch!
write the quadratic equation in vertex form. Give the coordinates of the vertex and the equation of the axis of symmetry y=x^2-14x-5.