Find the descriminant of x^2-7x+2=0 and describe the natural roots
Friday, July 23rd, 2010
Solution:
- When you have an equation in the form of ax2 + =x + c = 0, the solution is x = where D = b2 – 4ac
- D stands for discriminant, and values of x are the natural roots
- If D > 0, then the values of x are real and distinct.
- If D = 0, then the values of x are real and equal
- If D < 0, then the values of x are unreal
- In your question, x2 – 7x + 2 = 0, so the values of a, b and c are as follows:
- a = 1
- b = -7
- c = 2
- D = b2 – 4ac = 49 – 8 = 41 (this is the value of the discriminant)
- Since D > 0, then the values of x (the natural roots) are real and distinct
Tags: 11th Grade, Algebra Homework, Homework Answers, Trignometry
Posted in 11th Grade, Algebra Homework, Homework Answers, Trignometry.
Posted in 11th Grade, Algebra Homework, Homework Answers, Trignometry.
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