Question

under what condition will a x square + 5 x + 7 is equal to zero b a quadratic equation

Answer 1

Answer:

The solution to the equation is composed of roots x=−5+√3i2 and x=−5−√3i2.

Explanation:

Based on the quadratic formula x=−b±√b2−4ac2a and the form ax2+bx+c=0, we see that a=1, b=5 and c=7.

By substitution, x=−5±√52−4⋅1⋅72⋅1

x=−5±√25−282

x=−5±√−32

With i=√−1, x=−5±√3i2.

Thus, the roots of the equation are x=−5+√3i2 and x=−5−√3i2.

Answer 2

Answer:

Yes it is quadratic equation