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Expanding and simplifying the right hand side: x²=4(x-3)(x-3)=4(x²-6x+9)=4x²-24x+36 Deducting 'x²' from both sides: 0=3x²-24x+36 Dividing by 3 and fa...

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) 

1. 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.

2. ...

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 ...

This is when the waves approach the coast at an angle result in the gradual zig-zag movement of beach materials along the coast.