Example 1
Last updated at Dec. 8, 2016 by Teachoo
Transcript
Example 1 Write the solution set of the equation x2 + x – 2 = 0 in roster form. Solving the given equation x2 + x – 2 =0 x2 + 2x – x – 2 = 0 x(x + 2) – 1 (x + 2) = 0 (x – 1) (x + 2) = 0 So, x = 1, – 2 Therefore, the solution set of the given equation can be written in roster form as {1, –2}.
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Chapter 1 Class 11 Sets
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