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Algebra 24 Online
OpenStudy (anonymous):

Have all the helpers Gone Fishing? Could you catch my answer? Solve 2x^2 – 4x – 3 = 0 for x.

OpenStudy (anonymous):

try to split the middle term that is the coefficient of x

OpenStudy (anonymous):

2 and 2

OpenStudy (anonymous):

it means we can't split the middle term as it is not cmg equal to the 2*3=6

OpenStudy (anonymous):

try to use another method to solve x that is |dw:1365966175384:dw|

OpenStudy (anonymous):

here 2x^2 – 4x – 3 = 0 a=2 b=-4 c=-3

OpenStudy (anonymous):

(-4+under root?-4^2-4(2)(-3) / 2(2)

OpenStudy (anonymous):

=4

OpenStudy (anonymous):

|dw:1365966396906:dw|

OpenStudy (anonymous):

now make the factors of 40

OpenStudy (anonymous):

Couldn't I just do this: 2x^2-4x-3=0 (x-4)(x+1) x-4=0 x+1=0 x=4 x=-1 ?

OpenStudy (anonymous):

1*40=40 2*20=40 4*10=40 5*8=40

OpenStudy (anonymous):

this is wrong

OpenStudy (anonymous):

undeeroot 40 = underroot 2*2*2*5=4underroot10

OpenStudy (anonymous):

what is an under root?

OpenStudy (anonymous):

|dw:1365966692514:dw|

OpenStudy (anonymous):

|dw:1365966742954:dw|

OpenStudy (anonymous):

you mean a square root?

OpenStudy (anonymous):

|dw:1365966722906:dw|

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