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iii) 25x2 30x+7-0 |
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Answer» Comparing the equation to ax^2+bx+c=0a=25b=-30c=7b^2-4ac = (900)-4(25)(7)=900-700 =200So the roots are x=-b+-√b^2-4ac/2a= 30+√200/50 or 30-√200/50=30+10√2/50 or 30-10√2/50=3+√2/5 or 3-√2/5 |
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