hi, the question i've got is:

find the exact value of the x coordinate at the point of intersection of-

the line $\displaystyle 2x + y = 7$ and the curve $\displaystyle y = 4x^2 - 8x - 5$

the answer is $\displaystyle \frac{1}{4} (3 + \sqrt{57})$ and $\displaystyle \frac{1}{4}(3 - \sqrt{57})$

could someone show me the steps to arrive at this answer please?

thanks