It is: 2n^2 -5n -42 equals (2n+7)(n-6) when factored
3n + 2n = 7 + 4n 5n = 7 + 4n 5n - 4n = 7 n = 7
Oh, dude, that's like adding 2 apples to 3 apples, you know? So, if you have 2n and then add 3n, you end up with 5n. It's like math, but with letters instead of numbers.
Subract 5n from both sides and you get 9=-3n, then divide bother sides by -3 and you get n= -3
A variable comes after the number 2n+5n=7n
(5n - 20) It's a binomial expression in 'n'. Its numerical value depends on the numerical value of 'n'.
That factors to (2n + 1)(n + 2)
1 - 7n = 15 - 5n Add 5n to each side: 1 - 7n + 5n = 15 -5n + 5n ie 1 - 2n = 15; subtract 1 from each side: -2n = 14 divide both sides by -2: n = -7
5n + 6n - 2n
5n+6n-2n can be solved by combining like terms. Combine 5n and 6n and -2n to get 9n.
6+5n=2n-9Isolate the variable by subtracting 2n and 6 from both sides.5n-2n=-9-63n=-15n=-5
5n+6n-2n can be solved by combining like terms. Combine 5n and 6n and -2n to get 9n.
5n - 9 = 2n + 6 : Add 9 to both sides 5n = 2n + 15 : Subtract 2n from both sides 3n = 15 : Divide both sides by 3 n = 5
Assuming you meant 7n (not just 7 at the end of your question) - first... simplify the equation. Numbers raised to powers get priority - so your new sum is... 5n - 64n + 25n + n + 7n.... This simplifies to... -26n
-2n - 4p + 2. Without knowing n and p, that's the best you get.
5n + 1 = 10 + 2n5n - 2n + 1 - 1 = 10 - 1 + 2n - 2n3n = 93n/3 = 9/3n = 3
-3
-2n