2 years ago

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

Mathematics

2 answers:

PtichkaEL [24]2 years ago

6 0

Answer:

Step-by-step 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)

wel2 years ago

4 0

Answer:

=9a+b

Step-by-step explanation:

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