help me with this math

[heavy heart]

just tell me the name of this math and what kind of math it is. is it linear algebra or what? I will search on youtube and get a better idea about it. here given the first equation/value, you have to determine the value of second expression

[kindred yew]

Looks like polynomial algebra expressions

[heavy heart]

how would you solve it

[heavy heart]

square on both sides for first equation

you are done

[heavy heart]

i have tried but what answer would you get? what would be the value of x with it?

[heavy heart]

value of x?

[heavy heart]

yes

you need to get value of a^2+1/a^2 ryt?

@heavy heart and what this type of algebra is called

[heavy heart]

yes

[kindred yew]

just time through by a

[heavy heart]

@heavy heart yeah nice. how did you figure that this would work and you would get to a squared plus 1 by squared by using this identity

[heavy heart]

solve it with your method as well. I wanna see how it goes

[heavy heart]

we did these type of problems many times

[heavy heart]

what this type of math is called

umm?

algebra

ig

[heavy heart]

what type of algebra

[kindred yew]

polynomial algebra

[heavy heart]

o

[heavy heart]

more specific?

[kindred yew]

quadratics

i guess

[heavy heart]

because typing polynomial shows a lot of things

[kindred yew]

Type quadratic

[heavy heart]

but it will create root and many more complex things that i don't wanna use for multiple choice questions in exam

[heavy heart]

so you can do this way just rationalise denominator

[heavy heart]

continue

[kindred yew]

Sub the a that you have into the other equation to work out what it equals

[heavy heart]

do you watch youtube in order to learn math?

[kindred yew]

I do a-level maths in england, we have a very well laid out course and youtuber teach specifically the things we need to learn for the course

so i can learn from youtube but mainly from in class

[heavy heart]

@kindred yew can i get the name of the textbook that is used in the course?

[kindred yew]

There is four different textbooks, the course is Edexcel a-level maths, the books are Pure 1 maths, Stats and mechanics 1
Pure 2 maths, stats and mechanics 2

the 2 books are harder

[heavy heart]

answer should be 14 but subbing it there does not give that answer unless you can show me in a paper

[kindred yew]

i did it in my head so i could have been wrong, when im home ill do it do make sure i did it right

[heavy heart]

in school here they teach all of them in one book

[kindred yew]

Yeh theres just quite a lot for the course i do