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yociyoci
 2 years ago
Can someone guide me through inequality questions?
i) 152yy^2<0
ii) 20x4x^225>0
yociyoci
 2 years ago
Can someone guide me through inequality questions? i) 152yy^2<0 ii) 20x4x^225>0

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yociyoci
 2 years ago
Best ResponseYou've already chosen the best response.0so now, (y3)(y+5)>0? and y>5 or y<3?

Mertsj
 2 years ago
Best ResponseYou've already chosen the best response.1The first part is right. If you multiply two factors and get a positive result, then both factors must be positive or both factors must be negative.

Mertsj
 2 years ago
Best ResponseYou've already chosen the best response.1So we see that the solution is y <5 or y>3

yociyoci
 2 years ago
Best ResponseYou've already chosen the best response.0oh, alright. What about the second question? I got suck at (2x3)^2 > 0

Mertsj
 2 years ago
Best ResponseYou've already chosen the best response.1\[4x^220x+25<0\] \[(2x5)(2x5)<0\]

yociyoci
 2 years ago
Best ResponseYou've already chosen the best response.0opps, I was looking at a different one. Yes, I got to (2x5)^2<0

Mertsj
 2 years ago
Best ResponseYou've already chosen the best response.1Oh, it will never be less than 0 but of course we already knew that a real number raised to the second power will always be positive or 0 and never less than 0

yociyoci
 2 years ago
Best ResponseYou've already chosen the best response.0So there will be no solution in this case, but what if it is (2x5)^2 > 0? Will this work?

Mertsj
 2 years ago
Best ResponseYou've already chosen the best response.1Yes. Then it would be all real numbers except 0

yociyoci
 2 years ago
Best ResponseYou've already chosen the best response.0Alright! Thank you so much!
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