Ifa+b=7 and ab=10find the value of (a-b)
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Answered by
2
Answer:
a-b =3
Step-by-step explanation:
answer is 3
a+b =7 ab=10
a-b =√(a+b)^2-4ab
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Answered by
1
Step-by-step explanation:
a+b=7
ab=10
(7-b)b=10
b^2-7b+10=0
b^2-2b-5b+10=0
(b-5)(b-2)=0
b=2 or 5
a=5or2
a-b=3 or -3
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