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Math Help - hard factorise

  1. #1
    Super Member
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    Bristol, England
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    hard factorise

    hi, i need to factorise this:
    hard factorise-factorise.jpg

    would i do this:
    7x=360
    360/7 =51.43?

    if this is wrong could you please let me know how to do it properly but IF i am right could you also let me know
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  2. #2
    Super Member

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    Hello, andyboy179!


    There is no factoring in this problem.

    I assume we have some quadrilateral and those expressions are the four angles.

    Since the angles of a quadrilateral always total 360^o
    . . . . your work is correct: . 7x\:=\:360 ^o\quad\Rightarrow\quad x \:=\:\dfrac{360^o}{7} \:=\:51\frac{3}{7}^o


    Then the four angles are:

    . . \begin{array}{cccc}3x-1 \:=\:153\frac{2}{7}^o && x+2 \:=\:53\frac{3}{7}^o \\ \\ x-4 \:=\:47\frac{3}{7}^o && 2x+3 \:=\:105\frac{6}{7}^o \end{array}

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