NathalyN
NathalyN
14-01-2016
Mathematics
contestada
Help Please! 5 stars! :)
Respuesta :
TSO
TSO
14-01-2016
x² + 5x - 14 = 0
(x-2)(x+7) = 0
x - 2 = 0
x + 7 = 0
x = 2
x = -7
Your answer is
B
.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Next question.
2x² - 4x - 6 = 0
a = 2
b = -4
c = -6
And is
D
.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Next question
If the discriminant is positive, then there will be
2 solutions
.
Your answer is
C
.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Next question
Plugging in the equation into the quadratic formula should get you answer choice
A
.
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