Question

Using the quadratic formula to solve 11x2 – 4x = 1, what are the values of x?

Answer 1

The solutions to the equation are $\frac{2 +/- \sqrt{15)}}{11}$.

You can find the answer to any quadratic by using the quadratic formula. The formula is below.

$\frac{-b +/- \sqrt{b^{2}-4ac}}{2a}$

Then find a (the number attached to x^2), b (the number attached to x) and c (the constant). This will allow you to plug in and solve.

$\frac{4 +/- \sqrt{-4^{2}-4(11)(-1)}}{2(11)}$

$\frac{4 +/- \sqrt{16 + 44}}{22}$

$\frac{4 +/- \sqrt{60)}}{22}$

$\frac{2 +/- \sqrt{15)}}{11}$

Answer 2

Answer: it’s A

Step-by-step explanation:

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