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Find the positive square root of i) 9-2√3 -2 √5 +2√15 |
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Answer» -STEP EXPLANATION: 9-2√3 -2 √5 +2√15= 9-2√3 -2√5 +2√3√5 =1+3+5-2√3 -2√5 +2√3√5 =1^2+√3^2 +√5 ^2-2 *1*√3 -2*√5 *1+2*√3*√5 =(1-√3-√5^2root(9-2√3 -2 √5 +2√15)=ROOT((1-√3-√5 )^2) =1-√3-√5 |
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