exam Maths Puzzle Numerical Ability

factor by grouping:

4x^2 + 28x + 24x - 168

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exam Other Question

I need to solve for w and find the solution set for the following: Sqrt (5w-1) = w-3. I multiplied both sides by sqrt (5w-1) and got (5w-1) = w-3(sqrt (5w-1). Use the Pythagorean Theorem to prove Elementary Circular Continuity in Euclidean Geometry.