given that (x+8)^2-62=ax^2+bx+c find the values of a,b and c (3 marks)

For this question, the main component of the equation we need o look at is (x+8)^2. We know that (x+8)^2 is the same as (x+8)(x+8). First we have to expand these brackets. For his I make small table to ensure that I expand this correctly. So once we have expanded this fracker- we should get x^2+8x+8x+64. However this is only when we expand the brackets, we cannot forget about the -62 in the equation.So putting it all together our solved equation should be: x^2+16x+64-62this can be simplified to x^2+16x+2 - allowing us to answer the question is the asked form

NJ
Answered by Neyha J. Maths tutor

2635 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

White paint costs £2.80 per litre. Blue paint costs £3.50 per litre. White paint and blue paint are mixed in the ratio 3 : 2 Work out the cost of 18 litres of the mixture.


Find the inverse function of f(x)=5/(x-4)


Solve the following simultaneous equations to find the values of x and y: 3y - 7x = 15 & 2y = 4x + 12


Find the highest common factor of 432 and 522


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