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Homework Statement
x^2-y^2=16
isolate the variable x
Homework Equations
square roots
The Attempt at a Solution
x^2=y^2+16
x=y+4?
Isolate probably means solve for x in terms of y.What's the full problem statement ? 'Isolate' doesn't sound like a question with an answer ...
In that case you are done when you write ##x^2 = y^2 + 16 ## : it has x in isolation on the left hand side of the ##=## sign.that was the problem..it just said isolate the variable x..
So the answer is just ##x = \sqrt{y^2 + 16}## NOT ##y+4##it cant be a square
Watch out MM ! PF hates direct answers. it ruins the learning experienceSo the answer is just ##x = \sqrt{y^2 + 16}## NOT ##y+4##
Let's keep it cool. What's ##(a+b)^2##?why doesnt that reduce?
It does reduce, but you have to be careful...why doesnt that reduce?
I recognise the frustration and anger. Don't get carried away, sit back and think a bit now and then before firing of another post and the 'deletion of account' may be replaced by 'satisfaction from deeper udnerstanding'learning experience means frustration and anger and deletion of account for me...
NO. Let's multiply it out. ##(a+b)(a+b)## Do you know the distributive law of multiplication?a^2+b^2
yea i got it..is it because the plus sign is in there?NO. Let's multiply it out. ##(a+b)(a+b)## Do you know the distributive law of multiplication?