Solve 3x2 + 7x – 13 = 0 Give your solutions correct to 2 decimal places.

a=3 b=7 c=-13

Use quad formula: -b+-root[(b^2-4ac)/2a]

Sub in values: -7+-root[7^2-4x3x-13] =1.22 and -3.55

BP
Answered by Bronte P. Maths tutor

5400 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

A point A lies on the line y = 2x^2 - 8x + 2. A has y-coordinate (-4). Find all possible values for the x-coordinate of A.


Prove algebraically that (4n + 1)² − (2n − 1) is an even number for all positive integer values of n.


2X-6=4


Solve the following simultaneous equations 7x - 6y =38 and 3x + 9y =-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