A sum typically represents the result of adding two or more numbers or quantities together. For example, in mathematical notation, the sum of 2 and 3 can be expressed as (2 + 3 = 5). In a more general context, a sum can also be represented using the sigma notation, such as (\sum_{i=1}^{n} a_i), which denotes the addition of a sequence of terms (a_i) from (i=1) to (n). Overall, a sum signifies the total or aggregate value obtained from addition.
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Gottfried Wilhelm Leibniz developed Leibniz notation. In Leibniz notation, differentiation looks like a fraction dy/dx and integration looks like a long S, which was used in Germany at the time, to denote "sum" (as in the sum of infinitely thin rectangles used in definite integration).
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The symbol that looks like a star is called an asterisk. It looks like this *.
the sum of p and r is p + r5 times this sum is 5 × (p + r) = 5(p + r)Multiplication is not written as it looks like an 'x' - it is implied by two things next to each other.The brackets are needed as the addition needs to be done before the multiplication.
It looks silver and metallic. It is a rather with a silver shell .That is what silver looks like .