book
Maths Puzzle
Numerical Ability
Factor each expression completely:
-21 a x3y3 - 28x3y4 + 7x2y3z
xy + 3y -6x -18
6a2 + 4bx - 15a-10b
16a2 + 8a - 15
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book Other Question
A top spins 200 revolutions/minute. Find the angular velocity in radians/second.
My question says to simplify the radicals.
(square root of 6- square root of 5)( square root of 6+ square root of 5)
Could you help me? thanks!