Solve the following equation: x^2 - 11x + 18 = 0

Use the factorisation method.

Step 1: Rewrite (x + __ )(x + __ ) = 0

Step 2: We need to fill in the blanks. The numbers we require are -2 and -9.

Step 3: We need the values of x, so that when the brackets are multiplied together, the answer is zero.

So, x = 2 or x= 9.

Step 4: Substitute in the values of x into the original quadratic and check you have the right answer. You should get zero both times.

Answered by Tutor54985 D. Maths tutor

14676 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Find the value of roots of the quadratic: x^2-13x=30


Solve the equation 2X^2 + 5X + 2 = 0 stating clearly the number of roots


How can I find x and y?


There are n sweets in a bag. 6 are Orange, the rest are Yellow. Hannah takes a sweet out of the bag, and eats it, she does this twice. The Probability of Hannah eating two orange sweets is 1/3. Show that n^2 - n - 90 =0, and solve to find the value of n.


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