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√9 + 2 √ 18 = 3 + 2 √ 9x2
= 3 + 6√2
√3 + √ 3 = √3
3√5 - √5 = 2 √5
√18 + √8 = √9 x 2 + √4x2.
= 3√2. + 2 √2
= 5 √2
2√75 - 5 √3 = 2 √25x3. - 5 √3
= 10√3 - 5 √3
= 5 √3
√9 + 2√18 = 3 + 2√9.√2 = 3 + 6√2
√3 + √3 = 2√3
3√5 - √5 = 2√5
√18 + √8 = √9.√2 + √4.√2 = 3√2 + 2√2 = 5√2
2√75 - 5√3 = 2.√25.√3 - 5√3 = 10√3 - 5√3 = 5√3