If a - b= 10, ab = 11, find the value of a + b.
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Answered by
1
Answer:
a+b=12 or -12
Step-by-step explanation:
given
a-b=10
a=10+b
ab=11(given)
(10+b) b =11 (a=10+b)
10b+b^2=11
b^2+10b-11=0
b^2-b+11b-11=0(by middle term splitting)
b(b-1)+11(b-1)=0
(b+11) (b-1)=0
b=1 or-11
if b=1
a=11
a+b=12
if b=-11
a=-1
a+b=-12
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0
Answer:
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