Taylormolloy Taylormolloy
  • 15-03-2016
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What does X times (3x-6) = 45

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RASEA23
RASEA23 RASEA23
  • 15-03-2016
x(3x-6)=45
Distribute:
3x^2-6x-45=0
3x^2-15x+9x-45=0
3x(x-5)+9(x-5)=0
(3x+9)(x-5)=0
3x+9=0                  OR                x-5=0
3x=-9                                           x=5

x=-3 or x=5

Hope this helps :)
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