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Mathematics 33 Online
OpenStudy (anonymous):

PLZ HELP!!! What type of quadratic equation is represented in the graph below? a)Not enough information b)Non-factorable Trinomial c)Perfect Square Trinomial d)Difference of Two Squares

OpenStudy (anonymous):

OpenStudy (anonymous):

start by identifying the roots

OpenStudy (anonymous):

what do you mean by this? :o

OpenStudy (anonymous):

where the graph is y=0

OpenStudy (anonymous):

i don't understand

OpenStudy (anonymous):

y=0 is the line on the x-axis so when the x-axis intersects with the graph is whats considered a root

OpenStudy (anonymous):

oh so the vertex of the graph? because if so, then it is (0, -4) i think

OpenStudy (anonymous):

i mean point (2,0) and...?

OpenStudy (anonymous):

(-2, 0)

OpenStudy (anonymous):

so the roots are 2 and -2, now a quadratic equation can be written in the form of (x-a)*(x-b) where a and b are the roots

OpenStudy (anonymous):

yes, so is the answer D?

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

Okay thank you very much :)

OpenStudy (anonymous):

on a side note, differences of 2 squares are always in the form of x^2-a^2 = (x-a)(x+a).

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