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Q: What are the solutions in completing the square x2 plus 6x equals 7?

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This quadratic equation has no solutions because the discriminant is less than zero.

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It cannot be solved because the discriminant of the quadratic equation is less than zero

It is a quadratic equation with no real roots or real solutions. In the complex domain, the solutions are 1 +/- i where i is the imaginary square root of -1.

x = 2 or x = 2/5

many solutions

There are 120 solutions.

24

The two solutions are the conjugate complex numbers, +i*sqrt(11) and -i*sqrt(11), where i is the imaginary square root of -1.

100 equales

This quadratic equation which will have two solutions can be solved by completing the square or by using the quadratic equation formula.Completing the square:x2+18x+4 = 0(x+9)2+4 = 0(x+9)2+4-81 = 0(x+9)2 = 77x+9 = + or - the square root of 77x = -9 + or - the square root of 77If you're not too sure about the procedure of completing the square your maths tutor should be familiar with it.

There are four solutions to 9x4 plus 27x3 - 4x2 - 12x equals 0. One of the solutions is x = -3.

Two solutions and they are:- x = 0 and y = 3

1 solution

1

3x2+14x+8 = 0 x = -2/3 or x = -4

many solutions

zero solutions. If you plot these two lines, you will see that they are parallel and do not intersect.

One solution.

It has two equal solutions of 2

2

x = -½

Through a process of elimination and substitution the solutions are s = 8 and x = 5

25x (square) plus 40 plus 15 equals 680.

Only 1.