Solve 81x² + 72x + 16 = 0

You have come to the correct place if you are looking to solve the quadratic equation 81x squared plus 72x plus 16 equals 0, also known as 81x² + 72x + 16 = 0. Below, we walk you through how to find the answer.

To find the two possible answers to 81x^2 + 72x + 16 = 0, we will start by rewriting the equation in factored form. Then, we will create two separate equations that we can use to solve 81x² + 72x + 16 = 0.

Below is 81x squared plus 72x plus 16 in factored form. As you can see, 81x² + 72x + 16 has been grouped into two sets of parentheses.

(9x + 4)(9x + 4)

Next, we set each set of parentheses equal to 0 and solve for x to get the two answers to 81x^2 + 72x + 16 = 0.

(9x + 4) = 0
x₁ = -4/9

(9x + 4) = 0
x₂ = -4/9

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