shadia2 shadia2
  • 28-01-2017
  • Mathematics
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Someone help please

Someone help please class=

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KP7 KP7
  • 28-01-2017
Use ax^2 + bx + c = 0

ac = -8
b = 2

The factors are 4 and -2.
Plug them into the equation:

x^2 + 4x - 2x - 8

Then factorise it:

x ( x + 4) - 2 (x + 4)

so m = 4

(x + 4)^2

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