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
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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
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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
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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).