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| 1. |
,6x^2-13x-5=0 by completing square method |
| Answer» {tex}6x^2-13x-5=0{/tex}{tex}6x^2-13x = 5{/tex}{tex}x^2-13x/6 = 5/6{/tex}{tex}x^2-2. 13x/ 12 =5/6{/tex}{tex}x^2-2.13x/12 +169/144 = 5/6 +169/144{/tex}{tex}(x-13/12)^2 = 120/144 +169/144{/tex}{tex}(x-13/12)^2 = 289/144{/tex}{tex}(x-13/12)^2= (17/12)^2{/tex}{tex}(x-13/12) = = 17/12{/tex}{tex}x = 17/12+13/12{/tex}{tex}x = 30/12{/tex}{tex}x = 10/4 = 5/2 {/tex} | |