Question

Evaluate :a+b=7 and ab =10; find a-b.

Answer 1

Answer:

a= 5

b=2

a-b=3txkgclhcljvlhvljchlchxyxly

Answer 2

Answer:

hey.... mate here is your answer

Step-by-step explanation:

Given, (a+b)=7, ab=10

Squaring both sides

⇒(a+b)

2

=7

2

⇒a

2

+b

2

+2ab=49

⇒a

2

+b

2

=49−2(10)

⇒a

2

+b

2

=29

Now,

(a−b)

2

=a

2

+b

2

−2ab

=29−2(10)

=29−20

=9

∴a−b=

9

=±3

I hope it will help you

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