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Find the solution a2-b2=9 a.b=3 a+b=?
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3 votes
Find the solution
a2-b2=9
a.b=3
a+b=?

User Rafael Sedrakyan
by
4.0k points

2 Answers

10 votes

Answer:

Explanation:

(a²+b²)²=(a²-b²)²+4a²b²=(a²-b²)²+4(ab)²=9²+4×3²=9²(1+4)

a²+b²=3√5

(a+b)²=a²+b²=2ab=3√5+2(3)=3(2+√5)

a+b=√3√(2+√5)

User LukeN
by
3.5k points
12 votes

Answer:

a

2

​

=9a+b

2

​

Explanation:

User Almarie
by
3.5k points
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