Homework Help: maths

Posted by confused on Thursday, November 19, 2009 at 11:01am.

im trying to rearrange the following equation for x but getting confused because of the brackets and squares. I understand the process of changing the subject but on more simple equations. Please can you help me. Here's the equation
y = 3(x+5)^2

maths - bobpursley, Thursday, November 19, 2009 at 11:07am
divide by three.
y/3=(x+5)^2
take the square root of each side.

+-sqrt(y/3)=x+5
solve for x. check both roots.

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