Question

The quadratic equation ..... has 3 as one of its roots,select a proper option (a), (b), (c) or (d) from given options so that the statement becomes correct.
(a) x²–X–6=0
(b) x²+x-6=0
(c) x²-x+6=0
(d) x²+x+6=0

Answer 1

It's option A
Hope this helps you...

Answer 2

Option ( a ) is correct.

Explanation :

Put x = 3 in equation x² - x - 6 = 0

=> 3² - 3 - 6 = 0

=> 9 - 3 - 6 = 0

=> 9 - 9 = 0

=> 0 = 0 [ True ]

Therefore ,

x = 3 is one root of x² - x - 6 = 0

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