Solve -80x² - 99x + 81 = 0

You have come to the correct place if you are looking to solve the quadratic equation negative 80x squared minus 99x plus 81 equals 0, also known as -80x² - 99x + 81 = 0. Below, we walk you through how to find the answer.

To find the two possible answers to -80x^2 - 99x + 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 -80x² - 99x + 81 = 0.

Below is negative 80x squared minus 99x plus 81 in factored form. As you can see, -80x² - 99x + 81 has been grouped into two sets of parentheses.

-(16x - 9)(5x + 9)

Next, we set each set of parentheses equal to 0 and solve for x to get the two answers to -80x^2 - 99x + 81 = 0.

(16x - 9) = 0
x₁ = 9/16

(5x + 9) = 0
x₂ = -1 4/5

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