Solve 3x^2 + 6x – 2 = 0 Give your solutions correct to 2 decimal places.

3x2 + 6x - 2 = 0 When we have a polynomial with powers of x up to 2 (a quadratic equation) we can apply the quadratic formula : -b ± root(b2-4ac)/2a where your equation is in the form ax2 + bx + c 0 so applying it here we get two solutions: - 6 ± root(36 - 43-2)/2*3 = - 6 ± root (60)/6

MS
Answered by Maya S. Maths tutor

9216 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

5 tins of soup have a total weight of 1750 grams. 4 tins of soup and 3 packets of soup have a total weight of 1490 grams. Work out the total weight of 3 tins of soup and 2 packets of soup.


How do you factorise a quadratic with a co-efficient in front of the x^2 - e.g: 3x^2 + 14x + 8


The equation of the line L1 is y = 3x – 2 The equation of the line L2 is 3y – 9x + 5 = 0 Show that these two lines are parallel


There are 11 pens in a box, 8 are black, 3 are red. Two pens are taken out at random without replacement. What is the probability the pens are the same colour?


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2026 by IXL Learning