Solve the quadratic equation: x^2+ 2x + 7 = 21
1 answer:
Answer:
x1 = -4.872983346
x2 = 2.872983346
Step-by-step explanation:
<u>Given:</u>
x^2+2x+7=21
<u>Subtract 21 on both sides to get the right side equal to 0:</u>
x^2+2x-14=0
<u>Use the quadratic formula:</u>
x1 = -4.872983346
x2 = 2.872983346
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