0 reads0 ratings0 helpful
Using the quadratic formula, what roots are obtained for (x^2-4x-5=0)?
Advertisement
Answer and explanation
Correct answer: (x=5,-1)
Here (D=(-4)^2-4(1)(-5)=36), so (x=\frac{4\pm6}{2}). In exams, do not forget the negative sign of (c) while using the formula.
Frequently asked questions
What is the correct answer to this question?
(x=5,-1)
Why is this the correct answer?
Here (D=(-4)^2-4(1)(-5)=36), so (x=\frac{4\pm6}{2}). In exams, do not forget the negative sign of (c) while using the formula.
Which subject and chapter does this question cover?
This is a Class 10 Mathematics question. Chapter: Quadratic Equations. Topic: Methods of Solving Quadratic Equations.
Student feedback
Was this question useful?
Was this question useful?
👍 0 Helpful 👎 0 Not helpful
Difficulty
Easy0%
Medium0%
Hard0%
Was the explanation clear?
Yes 0% No 0%
0 responsesStudent Reviews
No published reviews yet.
Advertisement