149k views
2 votes
√9 +4√5 =a +√b tính a×b

1 Answer

5 votes

Answer:

240

Explanation:

√9 +√4^2 × 5=

√9 + √16×5=

3 + √80 comparing with a +√b

a= 3

b= 80

therefore a×b= 3×80= 240

User Joshua Davies
by
6.8k points