Question
With respect to the roots of x2–2x–3=0, we can say that
Answer: Option B
:
B
Step 1:- For x2–2x–3=0, value of discriminant
D=(−2)2–4(−3)(1)=4+12=16.
Step 2:- Since, D is a perfect square, roots are rational and unequal.
Step 3:- Solving the equation,
x=−(−2)+√(16)2or−(−2)−√(16)2
x=3,−1
Thus, both of them are integers.
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:
B
Step 1:- For x2–2x–3=0, value of discriminant
D=(−2)2–4(−3)(1)=4+12=16.
Step 2:- Since, D is a perfect square, roots are rational and unequal.
Step 3:- Solving the equation,
x=−(−2)+√(16)2or−(−2)−√(16)2
x=3,−1
Thus, both of them are integers.
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