Find the 15th term of the arithmetic sequence —X + 9,3x + 14,
7x + 19, ...

-4

step-by-step explanation:

(-4+8)=-(4-8)=-8+4=-4

square root

step-by-step explanation:

step by step solution :

step   1   :

1.1     4 = 22

(4)3 = (22)3 = 26

equation at the end of step   1   :

  ((23) • 26)2

step   2   :

equation at the end of step   2   :

  (23 • 26)2

step   3   :

final result :

  218

ya

6 equilateral triangles