In order to solve your problem, we need to find out what n equals. In order to do this, you need to know the opposites of the functions. The opposite of addition is subtraction and the opposite of multiplication is division.
Now to solve your problem you need to realize...
2n means n is being multiplied by 2
Now to solve the problem for n, you need to get n on one side of the equation all by itself. First step you should do is subtract 8 from both sides. You do this because the opposite function of addition is subtraction. Now the equation reads...
2n = -8
Now you have to divide both sides of the equation by 2 in order to get n by itself.
The equation should now read...
n = -8/2 You now need to simplify the equation on the right side
n = -4
2n + 8 = -142n = -22n = -11
The sum of the numbers given is 31. 1 + 2 + 4 + 8 + ... + 2n = 2n+1 - 1
-2n
It is an expression that can be simplified to: 3n-10
-3n+5n+4 = -4 2n = -4-4 2n = -8 n = -4
2n + 8 = -142n = -22n = -11
The sum of the numbers given is 31. 1 + 2 + 4 + 8 + ... + 2n = 2n+1 - 1
-2n
2n(3n + 8)
2n + 4m - 2n + m = 5m
2n plus 4 = 2n + 4
It is an expression that can be simplified to: 3n-10
-3n+5n+4 = -4 2n = -4-4 2n = -8 n = -4
6n2 + 16n can be factorised to give 2n(3n + 8) so the highest factor is 2n.
Un = 2n - 8 Un = 2n - 8 Un = 2n - 8 Un = 2n - 8
an=8-2n
The sum of 2n, for n= 0 to 29.