Does the equation x^2 + 2x + 5 = 0 have any real roots?

This equation has no real roots, as when we test the equation with the formula b2 - 4ac, we get 22 -415 = 4 - 20 = -16. As this is negative we can be assured that this equation has no real roots.

SB
Answered by Sami B. Maths tutor

4839 Views

See similar Maths A Level tutors

Related Maths A Level answers

All answers ▸

State the interval for which sin x is a decreasing function for 0⁰ ≤ x ≤ 360⁰.


Integrate ((7e^(x/2))/4) with respect to x within the bounds of x=0 and x=2. (Basic introduction to definite integration)


Find the centre coordinates, and radius of the circle with equation: x^2 + y^2 +6x -8y = 24


How can I demonstrate that (sin(T)+cos(T))(1-sin(T)cos(T))=(sin(T))^3+(cos(T))^3


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences