Adding +k is the same as subtracting (-k).
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to simplify the radicand
no, the absolute value does not change the subtraction into addition. it does however, change the difference to positive ( if the difference is negative)
something that involves addition subtraction multiplication or division
Addition does. Subtraction, just as with numbers: a - b is not equal to b - a, but you can change a - b to -b + a.Addition does. Subtraction, just as with numbers: a - b is not equal to b - a, but you can change a - b to -b + a.Addition does. Subtraction, just as with numbers: a - b is not equal to b - a, but you can change a - b to -b + a.Addition does. Subtraction, just as with numbers: a - b is not equal to b - a, but you can change a - b to -b + a.
An expression is a collection of terms which are separated by addition or subtraction symbols. Often it represents one side of an equation or a formula.