You add 1 plus another one and you get 2
1 + 2 + 4 + ... + 2n = 2n+1 - 1
Anything multiplied by zero is zero - no matter how complex the sum !
no if 1 plus 1 equals 2 then 2 plus 2 equals 4.
9
-6
12.
Synthesis. 2 of something, plus 1 of something, plus 3 of something equals sum!! Maths
In any addition sum, such as 1 + 2 = 3, the components in the addition part of the sum are called the addends.
(xn+2-1)/(x2-1)
because the number are the same /example2 times 3 equals 6. 3 times 2 equals 6
a number equals 2
The two numbers that have a product of -2 and a sum of -1 are 1 and -2. When multiplied, 1 × -2 equals -2, and when added, 1 + (-2) equals -1.