shadia2
shadia2
28-01-2017
Mathematics
contestada
Someone help please
Respuesta :
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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