You have come to the correct place if you are looking to solve the quadratic equation 5x squared plus 12x minus 81 equals 0, also known as 5x² + 12x - 81 = 0. Below, we walk you through how to find the answer.
To find the two possible answers to 5x^2 + 12x - 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 5x² + 12x - 81 = 0.
Below is 5x squared plus 12x minus 81 in factored form. As you can see, 5x² + 12x - 81 has been grouped into two sets of parentheses.
(x - 3)(5x + 27)
Next, we set each set of parentheses equal to 0 and solve for x to get the two answers to 5x^2 + 12x - 81 = 0.
(x - 3) = 0
x1 = 3
(5x + 27) = 0
x2 = -5 2/5
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