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Factorising

**Factorising**is the opposite of expanding bracketsYou need to look for the largest factors you can take out of every term in the expression

You need to write the expression with two brackets

x^2 + 7x + 10

You need to find two numbers which add up to 7 and multiply to make 10

5+2=7

5x2=10

When factorising x^2 + bx + x use this table to help find the two numbers

b | c | Factors |
---|---|---|

Positive | Positive | Both numbers positive |

Positive | Negative | Bigger number positive and smaller number negative |

Negative | Negative | Bigger number negative and smaller number positive |

Negative | Positive | Both numbers negative |

One of the brackets must contain a ax term

Try pairs of numbers which have a product of c

Check each pair by multiplying out the brackets

You can factorise expression that are written as something^2 - something else^2

**Factorising**is the opposite of expanding bracketsYou need to look for the largest factors you can take out of every term in the expression

You need to write the expression with two brackets

x^2 + 7x + 10

You need to find two numbers which add up to 7 and multiply to make 10

5+2=7

5x2=10

When factorising x^2 + bx + x use this table to help find the two numbers

b | c | Factors |
---|---|---|

Positive | Positive | Both numbers positive |

Positive | Negative | Bigger number positive and smaller number negative |

Negative | Negative | Bigger number negative and smaller number positive |

Negative | Positive | Both numbers negative |

One of the brackets must contain a ax term

Try pairs of numbers which have a product of c

Check each pair by multiplying out the brackets

You can factorise expression that are written as something^2 - something else^2

5.0(1)

Chat with Kai

Explore Top Notes

Verbs and Verb Tenses

Note

Studied by 40 people

4.7(3)

Lesson 10.2

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Studied by 3 people

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Último examen

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Studied by 7 people

5.0(5)

spanish 1 - unit 3 notes

Note

Studied by 401 people

4.8(5)

6.2 Expansion of Imperialism

Note

Studied by 85 people

4.3(4)

Chapter 16 - International Relations of Pakistan

Note

Studied by 20 people

5.0(1)