3 years ago

Solve the quadratic equation: x^2+ 2x + 7 = 21

Mathematics

1 answer:

Crank3 years ago

3 0

Answer:

x1 = -4.872983346

x2 = 2.872983346

Step-by-step explanation:

Given:

x^2+2x+7=21

Subtract 21 on both sides to get the right side equal to 0:

x^2+2x-14=0

Use the quadratic formula:

x1 = -4.872983346

x2 = 2.872983346

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