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jim_thompson5910Best ResponseYou've already chosen the best response.1
Hint: In general, the range of y = a(xh)^2+k is [k, infinity) if a > 0
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
close, it should be \[\Large y \ge 3\]
 one year ago

lindseyharrisonBest ResponseYou've already chosen the best response.1
What about this.... 4x^2 + 13x = 3
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
You need to complete the square. Do you know how do to that?
 one year ago

lindseyharrisonBest ResponseYou've already chosen the best response.1
So the answer would be x = 1/4 and x = 3
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
you're looking for the range correct?
 one year ago

lindseyharrisonBest ResponseYou've already chosen the best response.1
No just solving the equation
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
oh sry, I thought you were finding the range
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
4x^2 + 13x = 3 4x^2 + 13x + 3 = 0 Now use the quadratic formula to solve for x x = (b+sqrt(b^24ac))/(2a) x = ((13)+sqrt((13)^24(4)(3)))/(2(4)) x = (13+sqrt(169(48)))/(8) x = (13+sqrt(121))/8 x = (13+sqrt(121))/8 or x = (13sqrt(121))/8 x = (13+11)/8 or x = (1311)/8 x = 2/8 or x = 24/8 x = 1/4 or x = 3 So you are correct, nice job
 one year ago

lindseyharrisonBest ResponseYou've already chosen the best response.1
Thank you thank you! :)
 one year ago
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