Question

(2-5i)+(1+7i) In the form of a + ib

Answer 1

2-5i+1+7i=3+2i
so, a+bi=3+2i

Answer 2

Dude this is very easy.
Just solve it

2-5i + 1+ 7i
= 3+2i
This is ur answer
Here a=3 and b = 2