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anonymous
 one year ago
Solve.
2x2 + x – 1 = 9
anonymous
 one year ago
Solve. 2x2 + x – 1 = 9

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0let me post the answer choices!

pooja195
 one year ago
Best ResponseYou've already chosen the best response.1subtract the 9 so we have the equation = to 0 \[\huge 2x^2+x10\] them multiply a*c dw:1433014431435:dw factor it out the factors are 5 and 4 they add to 1 and multiply to 20

pooja195
 one year ago
Best ResponseYou've already chosen the best response.1then just solve the equations :) x+5=0 x4=0

mathmate
 one year ago
Best ResponseYou've already chosen the best response.1Faster than the answer choices!

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1433014411133:dw

pooja195
 one year ago
Best ResponseYou've already chosen the best response.1@pflorido explain your answer

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i just posted the choices!

pooja195
 one year ago
Best ResponseYou've already chosen the best response.1@ninowletonzalez06 your answer choices are hard to read :/

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0if you have trouble tell me which one to do again!:)

pooja195
 one year ago
Best ResponseYou've already chosen the best response.1they dont match up with my work .. thats weird :/ solve this see if they match up :/ x+5=0 x4=0

mathmate
 one year ago
Best ResponseYou've already chosen the best response.12x^2+5x4x10=0 x(2x+5)2(2x+5)=0 (x2)(2x+5)=0 so x=2 or x=5/2

mathmate
 one year ago
Best ResponseYou've already chosen the best response.1It's one step more when the coefficient of x^2 is not one!

pooja195
 one year ago
Best ResponseYou've already chosen the best response.1oh lol i missed a step oops sorry! >_< yeah @mathmate has the work :) and yes its C :)
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