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Mathematics 24 Online
OpenStudy (anonymous):

Solve using the quadratic formula FAN AND MEDAL

OpenStudy (anonymous):

\[9x^2+3x=1\]

rebeccaxhawaii (rebeccaxhawaii):

oki

OpenStudy (bemoseemo):

ah quadratics... my favorite enemy. lets do this I guess.

OpenStudy (welshfella):

quadratic formula x = [-b +/- sqrt(b^2-4ac)] / 2a

OpenStudy (welshfella):

- where ax^2 + bx + c = 0

OpenStudy (welshfella):

first write it in the standard for as above:- 9x^2 + 3x - 1 = 0 now plug a = 9 , b = 3 and c = -1 into the formula

OpenStudy (scoobydo):

Let's solve your equation step-by-step. 9x2+3x=1 Step 1: Subtract 1 from both sides. 9x2+3x−1=1−1 9x2+3x−1=0 Step 2: Use quadratic formula with a=9, b=3, c=-1. x= −b±√b2−4ac 2a x= −(3)±√(3)2−4(9)(−1) 2(9) x= −3±√45 18 x= −1 6 + 1 6 √5 or x= −1 6 + −1 6 √5 Answer: x= −1 6 + 1 6 √5 or x= −1 6 + −1 6 √5

OpenStudy (scoobydo):

or this one helps a lot http://www.mathpapa.com/algebra-calculator.html

OpenStudy (bemoseemo):

finished checking work, this is correct.

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