Solve 100x² - 80x

Solve 100x² - 80x - 9 = 0

You have come to the correct place if you are looking to solve the quadratic equation 100x squared minus 80x minus 9 equals 0, also known as 100x² - 80x - 9 = 0. Below, we walk you through how to find the answer.

To find the two possible answers to 100x^2 - 80x - 9 = 0, we will start by rewriting the equation in factored form. Then, we will create two separate equations that we can use to solve 100x² - 80x - 9 = 0.

Below is 100x squared minus 80x minus 9 in factored form. As you can see, 100x² - 80x - 9 has been grouped into two sets of parentheses.

(10x - 9)(10x + 1)

Next, we set each set of parentheses equal to 0 and solve for x to get the two answers to 100x^2 - 80x - 9 = 0.

(10x - 9) = 0
x₁ = 9/10

(10x + 1) = 0
x₂ = -1/10

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