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Q.
- Identify coefficients: Identify the coefficients , , and in the quadratic expression ., , .
- Find two numbers: Look for two numbers that multiply to () and add up to ().This step involves trial and error or the use of a calculator.
- Consider quadratic formula: After trying different combinations, realize that factoring this quadratic by finding two numbers that multiply to and add to is not straightforward.Consider using the quadratic formula instead.
- Calculate discriminant: The quadratic formula is . Calculate the discriminant . Discriminant = .
- Perform correct calculation: Perform the calculation for the discriminant.Discriminant = .
- Perform correct calculation: Perform the calculation for the discriminant. Discriminant = .Realize there's a mistake in the previous step, the calculation of the discriminant was not completed.
