which expression is equivalent to x^2-4? (x-2)^2 (x-2)(x+2) (x+2)(x+2) x^2(-4)

(x-2)(x+2) because the x values cancel out leaving the integer and x^2 value.

Answered by Bronte S. Maths tutor

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n is an integer such that 4n+6≤18 and 5n/(n^2+4)>1. Identify the range of possible values of n.


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