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Mathematics, 21.06.2019 16:40
Which expression is equivalent to7_/x^2 ÷ 5_/y^3? assume y# 0
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Mathematics, 21.06.2019 20:00
Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.
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Y=x^2+3x-7 y-5x+8=0 how many solutions are there...
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