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

2522 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

One of the teachers at a school is chosen at random. The probability that this teacher is female is 3/5. There are 36 male teachers at the school. Work out the total number of teachers at the school.


write 36 as a product of its prime factors


In an office there are twice as many females as males. 1/4 of the females wear glasses. 3/8 of the males wear glasses. 84 people in the office wear glasses. Work out the number of people in the office.


where do the graphs y=3x^2-2x-5 and y=4x-2 intersect


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:

© 2025 by IXL Learning