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Solve using formula : (i) x^(2) - 4x-5...

Solve using formula `:`
(i) `x^(2) - 4x-5=0` (ii) `x^(2) - 7x - 3=0`
(iii) With the help of flow chart given below solve the equation `x^(2) + 2sqrt(5) x + 5 = 0 ` using the formula `:`

Text Solution

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(i) ( 5, -1) (ii) `((-7+ sqrt( 61))/(2),(-7-sqrt(61))/( 2) )` (iii) `a=1, b=2 sqrt(5), c = 5, 0, x= ( - b +- sqrt(b^(2) - 4ac))/(2a) , ( -sqrt(5),-sqrt(5))`
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