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10 questions from this quiz
A statement always true for all variables
≡\equiv≡
No, manipulate each side separately
The more complicated side
It is always even
It could be odd or even
Odd
(a+b)(a−b)≡a2−b2(a+b)(a-b) \equiv a^2-b^2(a+b)(a−b)≡a2−b2
(n−2)(n+2)(n-2)(n+2)(n−2)(n+2)
Every line of your working clearly
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