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32 and b-S+2,ind the value of a? + - 50b., find the value of a +b-5ab. |
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Answer» A = (√3-√2)/(√3+√2) =(√3-√2)/(√3+√2)×(√3-√2)/(√3-√2) [ rationalizing it] =(√3 -√2)²/1 =(√3 -√2)² = 5- 2√6b=(√3+√2)/(√3-√2)×(√3+√2)/(√3+√2) [ rationalizing it]=(√3+√2)²/1 =(√3+√2)² = 5+2√6now, a²+b² - 5ab= (5-2√6)² + (5+2√6)² - 5(5-2√6)(5+2√6)=25 +24 -20√6 +25 +24 + 20√6 - 5(25-24)=98 -5 = 93 |
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