5x2+9x-2=0

7 answers

(5x +1)(x -2) =0
I need to use the quadratic formula to solve it
In google type :

quadratic equation online

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Free Online Quadratic Equation Solver: Solve by Quadratic Formula

When page be open in rectangle type :

5 x ^ 2 + 9 x - 2 = 0

and click option :

solve it!

You will see solution step by step
5x + 1 = 0

5x +1-1 = 0-1

5 x = -1
5x/5 = -1/5

x = -1/5

x-2 = 0
x -2 + 2 = 0+ 2

x = 2

-1/5, 2
Thank You So muchhh!!!!!! :)
Since you are to use the quadratic formula ....

x = (-9 ± √(81 - 4(5)(-2))/10
= (-9 ± √121)/10
= (-9 ± 11)/10 = 2 or -1/5
y+1=x
-2x+3y=2