Solve the equation 3x^2+2x-3=3.

  1. rearrange the formula so that it is equal to zero by subtracting 3 from both sides of the equation.3x2+2x-6=02) To check if this formula can be factorised you can check if the value of b2-4ac for this formula is equal to a square number. If not you must use the quadratic formula.ax2+bx+c = 3x2+2x-6where a= 3, b= 2 and c=-6so b2-4ac = (2)2-4(3)(-6)= 76 which is not a square number 3) therefore sub it into the quadratic formula using the values of a,b and c as above where a= 3, b= 2 and c=-6 and find 2 different answers to the equation in the question. where x= 1.11 or -1.79 to 3 s.f
Answered by Jolie B. Maths tutor

2886 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

I need help in Algebra as i struggle a lot with Algebra.


5x-7 = 3x + 3, solve x


Prove that an angle subtended by an arc is double at the centre then at the perimeter.


There are 300 passengers on a plane, 7/20 of them are men, 30% are women, the rest are children. Work out the number of children.


We're here to help

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