simplify question 9 and 10
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Q9
i) 5+√3/5-√3 × 5+√3/5+√3
= (5)²+(√3)²+2(5)(√3)/(5)²-(√3)²
= 25+3+10√3/25-3
= 28+10√3/22
ii) √2+√5/√2-√5 ×√2+√5/√2+√5
= (√2)² + (√5)² + 2(√2)(√5)/(√2)²-(√5)²
= 2+5+2√10/2-5
= 7+2√10/-3
= -1(7+2√10)/3
= -7-2√10/3
i) 5+√3/5-√3 × 5+√3/5+√3
= (5)²+(√3)²+2(5)(√3)/(5)²-(√3)²
= 25+3+10√3/25-3
= 28+10√3/22
ii) √2+√5/√2-√5 ×√2+√5/√2+√5
= (√2)² + (√5)² + 2(√2)(√5)/(√2)²-(√5)²
= 2+5+2√10/2-5
= 7+2√10/-3
= -1(7+2√10)/3
= -7-2√10/3
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