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Find the roots of the following quadrati...

Find the roots of the following quadratic equations by factorisation :
(i) `x^(2)-3x-10=0` (ii) `2x^(2)+x-6=0` (iii) `sqrt2x^(2)+7x+5sqrt2=0`
(iv) `2x^(2)-x+(1)/(8)=0` (v) `100x^(2)-20x+1=0` (vi) `2x^(2)+az-a^(2)=0`

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The correct Answer is:
-2
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