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Solve the equation ((x^2+2)^2)/x^2=9

First, note that we have x 2 in the denominator. This tells us that x 2 cannot equal to 0. So we have the boundary condition that x is not equal to 0. Now, to get rid of the denominator, we can multiply both...
VY
Answered by Vanesa Y. • Maths tutor
3339 Views

When writing about sources, how should I approach a picture differently from a written source?

History GCSE and A Level qualifications all require you to look at and evaluate sources. When you are looking at a source, your main goal is to consider its NOP (Nature, Origin, and Purpose). Whether a sourc...
IB
Answered by Ingrid B. • History tutor
4181 Views

Evaluate the impact of a tax on sugar drinks. (This is probably more A-level than GCSE)

Analysis: First define tax and explain that this could be ad valorem (percentage of price) or per unit (set tax per unit). Explain why the government would want to do this - overconsumption can cause obesity...
BL
Answered by Bronwen L. • Economics tutor
2646 Views

GCSE Maths: Expand and simpify 14(3x-7y)-2x(21-y)

=((14 3x)-(14 7y))+((-2x 21)-(-2x y))=42x-98y-42x+2xy=2xy-98y
NH
Answered by Nathan H. • Maths tutor
3113 Views

Factorise 9a^2+6ab.

So what does it mean when we factorise? Well, we want to take the highest common factor (HCF) of both of these algebraic terms and we want to take that outside the back to simplify the expression. First, let...
RD
Answered by Rebecca D. • Maths tutor
4413 Views