Question

Find a and b if ..

(a+b) (2+i) = b+1 + (10+2a)i​

Answer 1

Answer:

a= -3 and b= 7

Step-by-step explanation:

2(a+b)+(a+b)i = (b+1) +(10+2a)i

2(a+b)=b+1

2a+b=1...i and a+b=10+2a

-a+b=10 ..i

3a= -9

a=-3

-(-3)+b=10

b=7

a=-3 and b=7

Answer 2

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