(2)2 – 6(2)(-1) + 9(-1)2 = 4 + 12 + 9 = 25
simplify 8-3+2
{x/-6<x<3}
y=2x-10
3/10+7/15
(2÷2/3)-(2/3÷2)
n→∞ lim (1^ 2 −2^ 2 +3^ 2 −4^ 2 +5^ 2 −…(n terms)) /n^2
2l + 2l
cuanto vale l?
600 x 1.4
(10/3) + (4/3)/(5k/3) = (2k/(k+1))-1
