exam Maths Puzzle Numerical Ability

Solve by
completing the square.

4x + 2 = x to 2nd power

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exam Other Question

how do you find the domain and range and roots without graphing the queation. We are not allowed to use a graphing calculator, so if I need to graph the problem, how would I do that? For example: h(x)=sqrt(x^2-6x+8) Points A,D,and E are collinear. If AD = 27, DE = 35, and AE = 62, which of the three points is between the other two?