exam
Maths Puzzle
Numerical Ability
How do you solve something like this:
14x-28x^2
how do i solve if the bigger number is negative?
Does the answer become 14x(-2x+1)?
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exam Other Question
A plane takes 6 hours to fly from San Francisco to New York, and 5 hours to return back. The wind velocity is 50 miles per hour, from New York to San Francisco. What is the speed of the airplane.
Prove that:
1 + cos A/ 1 - cos A = tanČA/(secA - 1)Č