the inverted U means and.
the U means or.
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Word starting with U in algebra are many for example Union, Universal set, Upper limit, Upper bound, etc..........
only if u don't know maths
It depends which class u r in in some schools if u r in 7th grade and take pre-algebra it is considered advanced but in other schools it you are rite on track.
The reason why you might think algebraz annoying iz bcuz maybe u don't get it
The U symbol means "union". A union of two sets means that the distinct elements of each set are combined together. For example, the union of {1,2,3} and {4,5,6} is {1,2,3} U {4,5,6} = {1,2,3,4,5,6}. If a number is an element of both sets, the union of the sets will only contain one instance of that number. For example: {1,2,3} U {2,3,4} = {1,2,3,4}, and does NOT equal {1,2,2,3,3,4}.