- What is the simplest tautology?

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QUESTION IN PICTURE? Is there a difference between taking a 2 mg pill medication twice or taking one 4 mg pill? Will it make any difference? The area of a rectangle is x^-2x-8. The width of the rectangle is (x+2). What is the length? Negative one and one third plus positive two and five sixths? Write a chemical equation for the neutralization of acetic acid with aqueous lithium hydroxide to give aqueous lithium acetate plus water.?