You have come to the correct place if you are looking to solve the quadratic equation 30x squared plus 9x minus 81 equals 0, also known as 30x² + 9x - 81 = 0. Below, we walk you through how to find the answer.
To find the two possible answers to 30x^2 + 9x - 81 = 0, we will start by rewriting the equation in factored form. Then, we will create two separate equations that we can use to solve 30x² + 9x - 81 = 0.
Below is 30x squared plus 9x minus 81 in factored form. As you can see, 30x² + 9x - 81 has been grouped into two sets of parentheses.
(6x - 9)(5x + 9)
Next, we set each set of parentheses equal to 0 and solve for x to get the two answers to 30x^2 + 9x - 81 = 0.
(6x - 9) = 0
x1 = 1 1/2
(5x + 9) = 0
x2 = -1 4/5
Quadratic Calculator
Go here if you need to calculate another quadratic equation.
Solve 30x² + 9x - 54 = 0
Here is the next quadratic equation on our list that we have solved for you.
Copyright | Privacy Policy | Disclaimer | Contact