/Tag: Factors
25 06, 2016

Algebra Fractions Adding And Subtracting

By |2016-12-20T19:13:50+00:00June 25th, 2016|Tags: , , , |0 Comments

Algebra Fractions: Adding And Subtracting worked examples Simplify $$\frac{x-1}{x+3}+\frac{2x-5}{x+2}$$. $$=\frac{(x-1)(x+2)}{(x+3)(x+2)}+\frac{(2x-5)(x+3)}{x+3)(x+2)}$$ find the LCD (lowest common denominator) this will be: (x + 3)(x + 2) the first term needs to be multiplied by (x + 2) and the second term by (x + 3)  $$=\frac{x^2+2x-x-2}{(x+3)(x+2)}+\frac{2x^2+6x-5x-15}{x+3)(x+2)}$$ expand the top binomials (do [...]

25 08, 2015

Prime Factors

By |2016-10-21T13:17:09+00:00August 25th, 2015|Tags: , , , |Comments Off on Prime Factors

Prime Factors Prime factors are factors of a number which are prime numbers only. worked examples Find the prime factors of 12.  12: 1, 2, 3, 4, 6, 12 Find the factors of 12 ∴ prime factors are:  2, 3 1, 4, 6 and 12 are not prime numbers. leaving us [...]

25 08, 2015

Common Factors

By |2016-10-21T13:17:09+00:00August 25th, 2015|Tags: , , , |Comments Off on Common Factors

Common Factors Common factors are factors that fit into both of the numbers evenly, without any remainders. worked examples Find the common factors of 12 and 48.  12: 1, 2, 3, 4, 6, 12  Find the factors of 12 48: 1, 2, 3, 4, 6, 8, 12, 16, 24, 48 [...]

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