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QUESTION

how do you factorise quadratics

how do you factorise quadratics

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  • aenviasa
    aenviasa
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    ANSWER
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    ********

    *****

    *** ********* *** ** * ** * ********* *****

    *********

    ***

    quadratic

    ********

    x2- ** * ** * **** *** numbers which add up

    ** * and ******** to **** ** These ******* are * *** 5 (x * ** (x - **

    *

    Now

    **** *** ***** * ** **** when *****

    ********

    ***

    ********** ******** *** ****** is **** ***** ****** (x * ** * or ** * 5) *

    So

    *

    * * ** x * 5 *** *** ***** ***** ******* ** *************

    4

    *** * ** to *** ********** *** 9x

    *

    ***

    ************ * gives: ** * * ******* 4 * ** = ** - 36

    *

    **

    * Substituting * gives:

    **

    - * ×

    5

    * ** * ** * ** + 20 = ******** ***** 3 simple ***** ***

    ***

    **** be able

    to

    solve ********* ********** *** *** this ********

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