Question

(3×√18-2×1/√2+√32)÷2√2,等于多少？

Answer 1

（√3+√2）乘以（√3-√2）= (√3)^2 - (√2)^2 = 3 - 2 = 1 √32-3√(1/2)+√2 = 4√2 - 3√2 / 2 + √2 = (4 - 3/2 + 1) √2 = 7/2 * √2 ...

Answer 2

[3×√18-2×(1/√2)+√32]÷2√2
=(9√2-√2+4√2)÷2√2
=(12√2)÷2√2
=6

Answer 3

（√3+√2）乘以（√3-√2）= (√3)^2 - (√2)^2 = 3 - 2 = 1 √32-3√(1/2)+√2 = 4√2 - 3√2 / 2 + √2 = (4 - 3/2 + 1) √2 = 7/2 * √2 ...

Answer 4

（√3+√2）乘以（√3-√2）= (√3)^2 - (√2)^2 = 3 - 2 = 1 √32-3√(1/2)+√2 = 4√2 - 3√2 / 2 + √2 = (4 - 3/2 + 1) √2 = 7/2 * √2 ...