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# Solve by completing square 2x² - 6x plus 7 equals 0?

Top Answer
###### Answered 2010-06-14 15:07:49

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

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## Related Questions

Please do not remove this question from Inappropriate or split any alts from it. Thanks!

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

No because the discriminant of the given quadratic expression is less than zero.

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.

X2+11x+11 = 7x+9 X2+11x-7x+11-9 = 0 x2+4x+2 = 0 Solve as a quadratic equation by using the quadratic equation formula or by completing the square: x = -2 + or - the square root of 2

2x2+12x+1 = 0 By dividing all terms in the quadratic equation by 2 will make completing the square easier to work out: x2+6x+0.5 = 0 (x+3)2+0.5 = 0 (x+3)2-9+0.5 = 0 (x+3)2-8.5 = 0 (x+3)2 = 8.5 x+3 = the square root of 8.5 x = -3 and plus or minus the square root of 8.5

x2 + 20x +0 =30 [(20/2)2 =100] x2 + 20x + 100 =30 +100 &radic;(x+10)2=&radic;130 x+10=&radic;130 x= &minus;10+&radic;130 &radic; means square root

This question cannot be answered. You will have to give me the number to the square root. * * * * * a = &plusmn;sqrt(c^2 - b^2)

x2 - 16x + 68 = 5 (x - 8)2 + 4 = 5 (x - 8)2 = 1 x - 8 = 1 or -1 x = 9 or 7

x = the square root of -1, an imaginary number written as a lower case italic i.

Can you help with this equation? Thanks. Solve for x and y and z for the following. x plus y plus z equals 9 x plus 2y plus 3z equals 23 x plus 5y plus -3z equals -7

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

To solve for x, we'd have to know what this expression equals.

You can't solve it. But you can simplify it to get: 4x+y=2

If: x^2 +18x = 29 Then completing the square: (x+9)^2 -81 = 29 or (x+9)^2 = 110

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