3y^2 + 10y + 3

3y2 + 10y + 33y2 = 3 * 1(3y + n) * (y + r)n * r = 3 hence to try whole numbers first n = 1 or 3 meaning r = 3 or 1 respectivey * n + 3y * r = 10yif n =1 and r = 3 then equivalent is 10y (correct)as all values work 3y2 +10y + 3 = (3y + 1) * (y + 3)y = -1/3 y = -3Alternative, use formula (-b +/- Sqrt(b2 -4ac))/2awhere ay2 + by + ca = 3 b =10 c = 3 y = -1/3 y = -3

JH
Answered by Jack h. Maths tutor

3043 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

write 560000 in standard form


Tom bought a full bag of coal. After one week the bag was 2/3 full. During the next week he used 1/4 of the remaining coal. How much is left?


An triangular prism has base xcm, height (x+4)cm and length 4xcm. Find the volume of the prism in terms of x. Find the volume when x=2cm.


Solve algebraically the following if there is a solution: x+y=3 2x+y=5 x^2+y=6


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