Question

Answer for question 3 is 1. But I am stuck

Answer 1

Answer:

6√30 - 17

Step-by-step explanation:

Q3

• 7√3/(√10+√3) - 2√5/(√6+√5) - 3√2/(√15+3√2)=
• 7√3(√10-√3)/(√10+√3)(√10-√3) - 2√5(√6-√5)/(√6+√5)(√6-√5) - 3√2(√15-3√2)/(√15+3√2)(√15-3√2)=
• (7√30 - 7*3)/(10-9) - (2√30 - 2*5)/(6-5) - (3√30- 9*2)/(15-9*2)=
• (7√30 - 21) - (2√30 - 10) - (3√30 - 18)/(-3)=
• 7√30- 21 - 2√30 + 10 + √30 - 6=
• 6√30 - 17