Simplify the expression. 3 (x + 4) - 2x
A. x +4
B. x + 12
Ос. 3x + 10
D. 7- x
E. 3x + 12

answer: the angel abc is 30°,and the abc is a triangle where the angel bac is 90°

so ac is the half of 24=12ft,and from the pythagorean theorem we find ba

ba=√bc^2-ac^2=√576-144=√432=12√3ft

so bac is 12+12√3=12(1+√3)ft

use distributive property on all like terms and change your signs if you have a double negative or if you have positive/negative