The nth term IS 4n + 3
ie 4 times n and then add 3.
4n + 3 = 15 4n +3 - 3 = 15 - 3 4n = 12 4n/4 = 12/4 n = 3
It is simply: 4n as an algebraic term
It is 4n-13 and so the next number will be 11
The nth term in this sequence is 4n + 3.
Un = 4n - 9
4n + 3 = 15 4n +3 - 3 = 15 - 3 4n = 12 4n/4 = 12/4 n = 3
1
3 + 3n = 9 + 2n + 4n n = -2
n3 + 3n2 + 4n + 12 = (n3 + 3n2) + (4n + 12) = n2(n + 3) + 4(n + 3) = (n2 + 4)(n + 3).
N=3.
4n+13=1 -13 -134n=-12/4 /4n=-3
4n + 3 = 31n 3 = 27n n = 3/27
4n + 3 = 19Subtract 3 from each side:4n = 16Divide each side by 4:n = 4
4n + 9 = -3 Now, we take away 9 from both sides 4n = -12 Now divide by 4 n = -3
-2n
It is simply: 4n as an algebraic term
Yes. Multiplying out the brackets on the second one: 4(n + 3) = 4×n + 4×3 = 4n + 12.