Question

Answer 1

Bài 43:

a: \(=3\sqrt{2}+4\cdot2\sqrt{2}-3\sqrt{2}=8\sqrt{2}\)

b: \(=\sqrt{3}-\dfrac{1}{3}\cdot3\sqrt{3}+2\cdot13\sqrt{3}=26\sqrt{3}\)

c: \(=5\sqrt{a}+7\sqrt{a}-8\sqrt{a}=4\sqrt{a}\)

d: \(=-6\sqrt{b}-\dfrac{1}{3}\cdot3\sqrt{6b}+\dfrac{1}{5}\cdot5\sqrt{6b}\)

\(=-6\sqrt{b}\)

Answer 2

Bài 43:

a: = 3 √ 2 + 4 ⋅ 2 √ 2 − 3 √ 2 = 8 √ 2

b: = √ 3 − 1 3 ⋅ 3 √ 3 + 2 ⋅ 13 √ 3 = 26 √ 3

c: = 5 √ a + 7 √ a − 8 √ a = 4 √ a

d: = − 6 √ b − 1 3 ⋅ 3 √ 6 b + 1 5 ⋅ 5 √ 6 b

= − 6 √ b

CHO TUI LIKE ĐI :))