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anonymous
 4 years ago
JUST NEED CHECKED!!
Suppose that x* means 5x^2  x then what does (y+3)* mean?
Do you plug in (y+3) for x, expand the squared, and the (y+3)'s cross out to 5(y+3)?
(y+3)* = 5y+15
anonymous
 4 years ago
JUST NEED CHECKED!! Suppose that x* means 5x^2  x then what does (y+3)* mean? Do you plug in (y+3) for x, expand the squared, and the (y+3)'s cross out to 5(y+3)? (y+3)* = 5y+15

This Question is Closed

Hero
 4 years ago
Best ResponseYou've already chosen the best response.1x* = 5x^2  x y* = y+3 just a guess

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.2My thought would be that x* is like a function. f(x) = 5x^2x x* = 5x^2x (y+3)* = 5(y+3)^2(y+3)

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0I think so too. But wouldn't you expand it after that? 5(y+3)(y+3)(y+3) Then the (y+3)s cross out leaving just 5(y+3)?

Hero
 4 years ago
Best ResponseYou've already chosen the best response.1Yeah, that probably is right. the y variable threw me off

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.2Yes. I think you should go ahead and square and then collect like terms.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Okay, I think my final answer is 5y+15, since (y+3) are like terms.

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.2\[5(y+3)^{2}(y+3)=5(y^2+6y+9)y3=5y^2+30y+45y3\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0So the last (y+3) doesn't cross out anything?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Doesn't take a y out of the squared term?

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.2Remember the "powers first" rule in order of operations.

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.2This could be the approach you favor:

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.2\[5(y+3)^2(y+3)=(y+3)[5(y+3)1]=(y+3)[5y+151]=\]

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.2\[(y+3)(5y+14)=5y^2+14y+15y+42=5y^2+29y+42\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Thank you so much! You really helped. :)
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