Question

PLEASE HELP :(
Make B the subject

Answer 1

\[E = \alpha \theta + \beta \theta ^{2}\]

Answer 2

If we want to make a variable the subject of an equation, we deal with the thing furthest from the variable itself. For example, in this question, \(\theta^2\) is directly touching the variable, and \(\alpha\theta\) is separated from the term containing \(\beta\) by a \(+\) sign. Therefore, we shall deal with \(\alpha\theta\) first.

(I'm making it lengthy because this will apply to all the questions you will ask)

Answer 3

In short, you'll move \(\alpha\theta\) to the left hand side first :)

Answer 4

So would I begin by divide E by αθ ?

Answer 5

Please note that \(\alpha\theta\) is connected to the term with a \(+\) sign, and you'll thus have to take away \(\alpha\theta\) from \(E\) instead.

Answer 6

Take away = subtract

Answer 7

oh yes i see because the times isn't in front! so would the equation at this step be:
\[E - αθ = \beta \theta ^{2}\]

Answer 8

Yep :D

Answer 9

then would it equal
\[\beta = \frac{ E - αθ }{ \theta ^{2}}\]

Answer 10

Exactly, you're getting it now :D

Answer 11

Yay thanks so much! I just need a lot of practise.
Do you have any tips, because when i first get the question i get so overwhelmed and i dont know where to begin?
but thank you so so so much you're helping me get it more and more

Answer 12

Please kindly refer to my lengthy comment in the beginning :)

Answer 13

omg thank you so much! im writing that down! that is actually going to help me heaps @kc_kennylau

Answer 14

No problem at all :)