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Question
Which of the following are the roots of 3x2 + 2x – 1 = 0?
–1
Sum
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Solution
The given equation is (3x2 + 2x – 1 = 0)
x = (–1)
L.H.S = x2 + 2x – 1
= 3 × (–1)2 + 2 × (–1) – 1
= 3 – 2 – 1
= 0
= R.H.S
Thus, (–1) is a root of (3x2 + 2x – 1 = 0)
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