If using the method of completing the square to solve the quadratic equation X^2+4x + 3 = 0, which number would have to be added to "complete the square"?

Anyone know? will mark brainliest if correct

Is appreciated! graph the functions and approximate an x-value in which the exponential function surpasses the polynomial function. f(x) = 4^xg(x) = 4x^2options: x = -1x = 0x = 1x = 2

Write the pair of fractions as a pair of fractions with a common denominator