maths  a few questions
posted by em .
Simplify 3(x2)^2/x2
Is the answer 3x^210x+10?
If not then what is?
When p= sqrt2 and q= sqrt6 write pq in the form a(sqrt)b where a and b are integers and b is as small as possible.
Multiply out these brackets. Give your answer in the simplest form. (x+2y)(2x+y)
Is the answer 2x^2 + 2y^2 + 5xy?
If not then what is?
Also when there is an = sign but it is 3 lines instead of 2, what does this mean?
Thankyou xx
1) No as
3(x2)^2/(x2)=3(x2)=3x6
2) sqrt2 x sqrt 6 =sqrt(2x6)=sqrt12
=Sqrt(4x3) =sqrt4 x sqrt3 =2xsqrt3
therefore a is 2 and b is 3
3) yes you are correct
4) it means equivalent for all values of your variable ie no one unique answer it represents an identity
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