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Solve x^2 = 4(x – 3)^2

Expanding and simplifying the right hand side: x 2 =4(x-3)(x-3)=4(x 2 -6x+9)=4x 2 -24x+36 Deducting 'x 2 ' from both sides: 0=3x 2 -24x+36 Dividing by 3 and factorising: 0=x 2 -8x+12=(x-6)(x-2) Therefore sol...
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Answered by Matthew G. • Maths tutor
3509 Views

Factorise the following expression: x^2+12x-45

x^2+12x-45 x^2+15x-3x-45 (15x - 3x= 12x and 15 x -3=-45) x(x+15)-3(x+15) (x-3)(x+15)
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Answered by Aisha H. • Maths tutor
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The increasing role of anglicisms in the German language is a negative development. Discuss.

Look at the wording of the question. Is it a development at all? Look at the historic background of anglicisms in the German language; has their role increased over the years. Limit the scope of your essay. ...
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Answered by Isabelle W. • German tutor
2745 Views

What are vectors?

Vectors can seem complicated at first but they are simple once you understand that you need two pieces of information in order to define a vector. A vector is composed of direction and magnitude. You can thi...
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Answered by Esperanza C. • Physics tutor
7998 Views

What is longshore drift?

This is when the waves approach the coast at an angle result in the gradual zig-zag movement of beach materials along the coast.
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Answered by Izzy O. • Geography tutor
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