Q: What is 2n squared minus 5n minus 42?

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5n = 2n + 3n .

3n + 2n = 7 + 4n 5n = 7 + 4n 5n - 4n = 7 n = 7

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'.

Related questions

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 = 2n + 3n .

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

3n+18 !