Solve the quadratic equation by completing the square. x^2 + 4x - 3 = 0 a) x = 4 ± 7 b) x = 2 ± 7 c) x = -4 ± 7 d) x = -2 ± 7

The appropriate choice is

... D) x = -2 ±√7

u = -(6/7)w

step-by-step explanation:

place all values with 'u' on one side of the equation.

4u + 8w = - 3u + 2w

4u + 3u = 2w - 8w

further simplify the equation by solving the addition and subtraction.

7u = - 6w

make 'u' the independent variable by placing its co-efficient on the right-hand side.

u = - (6/7)w