Use the quadratic formula to find the solutions.

Substitute the values , , and into the quadratic formula and solve for .

Simplify the numerator.

Raise to the power of .

Multiply by .

Multiply by .

Add and .

Multiply by .

Simplify .

The final answer is the combination of both solutions.

Solve Using the Quadratic Formula 0.7x^2-2.8x-0.7=0