RRB Government Jobs Exams

Find the equation of a quadratic function f whose graph has a vertical axis of
symmetry x = -2, the range of f is given by the interval [4 , +infinity) and f(2) = 8.

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RRB Other Question

Find all values of b and c so that the quadratic function
f(x) = x^2 + bx + c has a graph that is tangent to the x axis and a
y-intercept at (0 , 4) A rectangular picture measuring 10 cm by 15 cm is surrounded by a frame
with uniform width x. Write a quadratic function that gives the area A of the
frame as a function of x.