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=((143x)-(147y))+((-2x21)-(-2xy))=42x-98y-42x+2xy=2xy-98y

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, ...

(An Introduction to Ser/Estar)Ser is used to convey essential qualities. When you introduce yourself and talk about your name, your appearance, your nationality, your occupation and your ...

Shelley presents a complex view of evil through the character of the monster. Shelley does this by providing the creature with a dual personality. In one essence, the monster is typified as being maliciou...

Expanding 3 brackets is very much the same method as expanding 2. In the example you gave, to start you would expand the first two brackets out using the FOIL method (firsts, outsides, insides and leftove...