book Maths Puzzle Numerical Ability

x2-16x+23=0

-4x2+8x+3=0

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book Other Question

4+X GREATER OR EQUAL TO 2(7X+1) For the equation: x - (sqrt of x) = 0 perform the following:
a) Solve for all values of x that satisfies the equation.
b) Graph the functions (y = x) and (y = sqrt of x) on th