Question

Solve by the quadratic formula and simplify
4x^2+x-3=0

Answer 1

x = -1 and x = 3/4

Explanation:

Here the coefficients are a = 4, b = 1 and c = -3.

The discriminant is b²-4ac. In this case, it is 1²-4(4)(-3), or 49.

Thus, the solutions are:

-1 ± √49 -1 ± 7

x = ---------------- = --------------- → x = -1 and x = 3/4

2(4) 8