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blackrabbit490 blackrabbit490
  • 27-02-2017
  • Mathematics
Answered

Can somebody help me with number 7? Please explain as well! :)

Can somebody help me with number 7? Please explain as well! :) class=

Verified Answer :

Galaxy7388bm
Galaxy7388bm Galaxy7388bm
  • 04-03-2017

To factor number 7 :
3x^2-12
3x^2+3×-4
31, -4:2-2
3(x^2-2^2)
use difference of square formula ((a^2+b^2=(a+b)(a-b))
3(x+2)(x-2)

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