Evaluate 15n+19 if n=1/3
15n + 5 or 5(3n + 1)
2n2 + 15n + 7 = 2n2 + n + 14n + 7 = (2n2 + n) + (14n + 7) = n(2n + 1) + 7(2n + 1) = (2n + 1)(n + 7)
14
-5 -15n = 10add 5 to both sides-15n = 15divide both sides by -15n = -1
It evaluates to: 12+(-1)+(-1)+3 = 13
1 + 19 + 0 + 1 = 21
109 you can plus like this: (19+1)+20+20+(1+1+18)+4+25
18 + 1 = 19
19 + 1 = 20
(7-3)^2 plus (7-1)^2 = 16+36
It is -41.