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Learn to solve math problems! Find pleasure in helping others.
The intersection of 1 is 2 = "A = 1b = 2, and the union answer is {1, 2,5}.

Because it is arithmetic a3+a4=a2+a5=a 1+a6.

With Vieta theorem, a2+a5=9 a2a5= 18.

x2-9x+ 18 = 0x 1 = 3 x2 = 6 | d | = 1 a 1 a6 =

Suppose A2 = 3a5 = 6d =1a1a6 = 2 * 7 =14.

Suppose a5 = 3a2 = 6d =-1a1a6 = 2 * 7 =14.

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