You have come to the correct place if you are looking to solve the quadratic equation negative 16x squared minus 72x minus 80 equals 0, also known as -16x² - 72x - 80 = 0. Below, we walk you through how to find the answer.
To find the two possible answers to -16x^2 - 72x - 80 = 0, we will start by rewriting the equation in factored form. Then, we will create two separate equations that we can use to solve -16x² - 72x - 80 = 0.
Below is negative 16x squared minus 72x minus 80 in factored form. As you can see, -16x² - 72x - 80 has been grouped into two sets of parentheses.
-(8x + 16)(2x + 5)
Next, we set each set of parentheses equal to 0 and solve for x to get the two answers to -16x^2 - 72x - 80 = 0.
(8x + 16) = 0
x1 = -2
(2x + 5) = 0
x2 = -2 1/2
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