Factorise and solve (x^2) - 8x + 15 = 0.

Factorise means to put into brackets and solve means to find values of x that make the equation true.We need to find two numbers that multiply to make 15 and add together to make -8. They both need to be negative numbers to get negative 8 and positive 15 (as a negative multiplied by a negative gives a positive). So, it will be (x-5)(x-3)=0.Now, set each bracket to equal 0. x-5=0 and x-3=0Solve to get x equals by adding 5 and 3 to both sides.Therefore, x=5 and x=3.

LC
Answered by Libby C. Maths tutor

2501 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

If a train leaves for a 130 mile journey at 1.30pm, and travels at a constant speed of 50 miles per hour, at what time will it arrive?


What is Pythagoras' Theorem and how do you use it?


How do I find the equation of a line between two points?


Solve ((6+x)/2) + ((2-3x)/3) = 31/6


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