Verified answer

a-b=6

ab=-5

(a+b)²

a=6+b

6b+b²+5=0

D=36-20=16

b1= (-6+4)/2= -1

b2= (-6-4)/2= -5

a1= 5

a2= 1

1) a1= 5, b1= -1

(a+b)²= (5-1)²= 4²=16

2) a2= 1, b2= -5

(a+b)²= (1-5)²= (-4)²= 16

Verified answer

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