2
mn - 15 + 3m - 5n Rearranging: mn + 3m - 5n - 15 = m(n + 3) - 5(n + 3) = (m - 5)*(n + 3)
In verbal expression, "5n" would be read as "five times n" or "five multiplied by n". This indicates that the value of n is being multiplied by 5. For example, if n = 3, then 5n would be equal to 5 x 3, which equals 15.
3
It is impossible to read exactly what the expression is - it looks like there are some operators missing from expression: between the 2 and 5n, between the 5 and n, between the 3 and n. As written it looks like: 25n + 3 + 5n + 3n + 2 = 33n + 5 which is not divisible by 17 for n = 1 (at least). Please re-ask your question spelling out every operator, eg 2 bracket 5n plus 3 close bracket plus 3 minus n...
N=3.
n=3
n=1 2/3
1
Subract 5n from both sides and you get 9=-3n, then divide bother sides by -3 and you get n= -3
5n - n = 8 + 4 ie 4n = 12 so n = 3
5n + 1 = 10 + 2n5n - 2n + 1 - 1 = 10 - 1 + 2n - 2n3n = 93n/3 = 9/3n = 3
(2n+3)(n+1)=2n2+5n+3.
Previous poster was very wrong, 5n-3=17 5n=20 n=4
-2n
3/5
4 = -5n + 6n2 if you want to solve for n: 6n2 - 5n - 4 = 0 (3n - 4)(2n + 1) = 0 3n - 4 = 0, n = 4/3 2n + 1 = 0, n = -1/2 n = {-1/2, 4/3}