exam Maths Puzzle Numerical Ability

determine the zeros of each quadratic relation
a) A=w(20-w)

b) y=2x(5x+6)

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exam Other Question

Please help me with this problem!!
Which of the following is NOT true about the hyperbola:
(y^2/25)-x^2 = 1
1. It has vertices at (0, +or- 5)
2. It opens to the right and the l The four Baldwin Brothers have a total age of 136 and their ages are represented by consecutive odd intergers. What are the ages of all four brothers?