rearranging formulae

I would like to know good tips to learn Rearranging formulae I have some questions on this , They have told us t =s squared +5
Another Question is Make X the subject of the Formula y = x squared + 4 divided by 5 can you please help me with this question.

Reply 1

TheAlchemistress

I don't know if it's right, but you have to square root the squares to get the subject on it's on.

Reply 2

Valyrian

Original post by mathsgenuisxx

Reply 3

etothepiiplusone

Original post by Valyrian

\sqrt{5y-4} \neq \sqrt{5y}-2

Also the final answer should be

x = \pm \sqrt{5y-4}

Reply 4

Valyrian

Original post by etothepiiplusone

\sqrt{5y-4} \neq \sqrt{5y}-2

Also the final answer should be

x = \pm \sqrt{5y-4}

Oops sorry.

Reply 5

mathsgenuisxx

Thankyou so much for this help and i loved your working out and it really helped me so much.

Reply 6

mathsgenuisxx

Make x the subject of the formula y = x squared + 4 divided by 5.

Another question : Rearrange the formula p= q divided 5 - q to make q the subject.

Another question : n = 3+m divided by minus 5 it then the question then asks Rearrange the formula to give m in terms of n.

Another question: Make v the subject of the formula w = uv divided by u + v.

One final one : Rearrange 4y = k(2-3y) to make y in terms of k.