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OpenStudy (anonymous):
y=-2 in 5y^4 -2y-7
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OpenStudy (anonymous):
plug in -2 for all the y values
OpenStudy (anonymous):
5(-2)^4-2(-2)-7
OpenStudy (anonymous):
do you understand?
OpenStudy (anonymous):
so 5(16) -3 80 -3 =77
OpenStudy (anonymous):
yes
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