Use the quadratic formula to solve the equation. If necessary, round to the nearest hundredth.

a2 - 2a - 224 = 0

8, - 28

16, - 14

-16, 14

-8, 28

The answer is Answer:

16, - 14

For this case we have the following equation:

a2 - 2a - 224 = 0

Applying the resolver we have:

A = ( - b + / - root (b ^ 2 - 4 * a * c)) / (2 * a)

Substituting values we have:

A = ( - ( - 2) + / - root (( - 2) ^ 2 - 4 * 1 * ( - 224))) / (2 * (1))

Rewriting:

A = (2 + / - root (4 + 896)) / (2)

A = (2 + / - root (900)) / (2)

A = (2 + / - 30) / (2)

The roots are:

A1 = (2 + 30) / (2)

A2 = (2 - 30) / (2)

Rewriting:

A1 = 16

A2 = - 14

Answer:

16, - 14