find the root or roots of the following equation: 2x^2 + 18x + 36

finding the roots, means to find the coordinates at which the curve intersects the X axis. At first look you may notice that each function in the equation is divisible by 2, you can do this to make solving the equation necessary2x2+18x+36=0 (divide by 2)x2+9x+18=0now you can factorise the equation. Remember: the 2 x values at the roots must multiply give you the constant and add to give the x value in the above equation. (x+3)(x+6)=0

JH
Answered by Jason H. Maths tutor

3318 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Q = P / (R (4-t)), P=36, R= 3, t=-2


Here are three expressions. b/a, a – b, and ab. When a = 2 and b = -6, which expression has the smallest value?


How do you solve two simultaneous equations? (i.e. 5x + y =21 and x - 3y =9)


How to calculate sin, cos and tan


We're here to help

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

MyTutor is part of the IXL family of brands:

© 2026 by IXL Learning