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If a gue vs and a vs, find a -6.If a=-and b= |
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Answer» a = 3 + V5/ 3 - V5 x 3 + V5/ 3+ V5 = ( 3 + V5)^2/(3)^2-(5) = (3 + V5)^2/9-5= ( 3 + V5)^2/4_________(1); b = 3- V5/ 3 + V5 x 3 - V5/ 3 - V5 = (3 )^2-(5)/(3 -V5)^2= 9 - 5/(3- V5)^2= 4 / (3 -V5)^2____________(2); (3+V5)^2/4 × 4/ ( 3- V5)^2 = (3 + V5)^2/ ( 3 - V5)^2 = 9+5 +2(3)(V5)/ 9+5-2(3)(V5) = 14/14=1 9+5 +2(3)(V5) - 9 - 5 +2(3)(V5) = 2(3)(V5)+2(3)(V5)=6V5+6V5= 12V5 |
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