Question

ear selection
1 point
a? +2a + b2 - 4b +5 =0 RCT a+b =? / If a2 +2a + b² - 4b +5 =0 then a+b =?
a. 1
ОО
b. 2.​

Answer 1

Answer:

by this method you can do your sum

Step-by-step explanation:

think there's a typo in the 4th equation. It should be :

5a + 3b + 7c + d = -16.

Adding (1) & (4), we get :

6 (a+d) + 10 (b+c) = -16.....(5)

Adding (2) & (3), we get :

10 (a+d) + 10 (b+c) = 0........(6)

Subtracting (5) from (6), we get :

4 (a+d) = 16 so a + d = 4.

I hope you can take it further & reach the answer.