Solve X^2 - 10X + 18=0

This is solving a quadratic equation. There are two ways we can solve this. Using the quadratic equation or completing the square. 1. Quadratic equation-The equation is in the form ax^2 + bx + c. Where a=1 b=-10 c=18 Then by susbtituting these values into the quadratic equation you get 2.35 and 5.29 2. Completing the square Begin by creating (x-5)^2-25+18=0 therefore ((x-5)^2) -7=0 x-5=+/- 7^0.5 x=+/-(7^0.5) +5

Answered by Ben M. Maths tutor

7725 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

solve: 4x^2 + 6x - 4 > 0


Lily goes on a car journey. For the first 30 min. her average speed is 40 mph. She then stops for 15 min. She then completes the journey at an average speed of 60 mph. The total journey time is 1 h. What is her overall average speed?


a) You area told that y is proportional to x2 and that when y = 75, x = 5. Find a formula for y in terms of x. y = x b) Find the value of y when x = 3. c) Find the value of x when y = 1200.


Trigonometry: what is it, and how do I do it?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences