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Maths Puzzle
Numerical Ability
(8y^2-2y-3) - (9y^2-7y-1)
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book Other Question
I'm not understanding "no solutions" or infinitely many solutions where appropriate...How do I tell the difference?
y = x
y = 3x + 2
A telescope is on sale of $250 after markdown of 20% off the regular price. Find the regular price.