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OpenStudy (anonymous):
What are the x-intercept(s) of the graph of y + 20 = x2 − x?
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OpenStudy (luigi0210):
x-intercept: when y=0
OpenStudy (jim766):
get the y by itself and factor it
OpenStudy (anonymous):
so y=x2-x-20?
OpenStudy (luigi0210):
correct, now factor
OpenStudy (anonymous):
y=(x+4)(x-5)?
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OpenStudy (luigi0210):
Yup, now set it equal to zero and solve
OpenStudy (anonymous):
x=-4,5?
OpenStudy (luigi0210):
Yea :D See that wasn't so hard now was it?
OpenStudy (anonymous):
nope thx!
OpenStudy (luigi0210):
Any time
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