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OpenStudy (anonymous):
x^3+2y^3 for x=7 and y=1
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OpenStudy (anonymous):
find the value
OpenStudy (anonymous):
substitute the values 7 ^3 = 343 and y = 1
OpenStudy (anonymous):
now 343 + 2 ( 1 ) gives me ... 345
OpenStudy (anonymous):
evaluate 2x^4+2x^3+x^7 when x=7
OpenStudy (anonymous):
my friend, go on replacing the value of x in each x you see with the value of 7 can you do that ?
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