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PeterPan
 one year ago
Best ResponseYou've already chosen the best response.0Well, clearly x cannot be positive, as that would mean x+3 is positive too. x must be negative, but no less than 3, or else x+3 would also be negative.

ParthKohli
 one year ago
Best ResponseYou've already chosen the best response.0I know them by the quadratic formula

PeterPan
 one year ago
Best ResponseYou've already chosen the best response.0Oh, right. I forgot to assume the realness of x... I'm lost :D

phi
 one year ago
Best ResponseYou've already chosen the best response.1you can complete the square as an alternative to the quadratric formula

PeterPan
 one year ago
Best ResponseYou've already chosen the best response.0That's kinda like using the quadratic formula anyway? :D

phi
 one year ago
Best ResponseYou've already chosen the best response.1you will get complex roots

ParthKohli
 one year ago
Best ResponseYou've already chosen the best response.0Well\[x^2 + 3x + 2.75 = 9 + 2.75\]

PeterPan
 one year ago
Best ResponseYou've already chosen the best response.0What's with the 2.75? You mean 2.25, right?

sami21
 one year ago
Best ResponseYou've already chosen the best response.0can i use compeleting square ??? or factor mehod ?

ParthKohli
 one year ago
Best ResponseYou've already chosen the best response.0\[(x + 1.5)^2 = 9 + 2.25\]Yes, I wanna know how to factor this over \(\mathbb C\) without knowing the roots!

PeterPan
 one year ago
Best ResponseYou've already chosen the best response.0It seems like it's already almost done?

sami21
 one year ago
Best ResponseYou've already chosen the best response.0well, i guess this is a good condidate for completing square .

ParthKohli
 one year ago
Best ResponseYou've already chosen the best response.0OK, completing the square worked out well. Thanks @phi :)
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