Question
If {1/(y + 1) + 1/(y + 5)} = {1/(y + 2) + 1/(y + 4)}.
Find the value of yÂSolution
We are solving: 
Combine the fractions on both sides. Cancel common terms (2y+6) to get: 
This simplifies to 5=8, which is a contradiction unless 2y+6=0. Solve 2y+6=0: Hence y = -3
Consider two concentric circles having radii 17 cm and 15 cm. What is the length (in cm) of the chord, of the bigger circle, which is a tangent to the s...
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