I haven't got very far, but I've so far got the fact that you need two brackets and from there, I'm stufffed....
(x+ ?) (x- ?)
That's it, i think its gonna have to be a fraction or something... I'll give it a try... Sorry i couldn't be mroe help... <3
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Without an equality sign the expression given can't be considered to be an equation.
the problem is not proper to slove. I just want to suggest to follow the related link that explains the concept of completing the square clearly.
No because the discriminant of the given quadratic expression is less than zero.
I assume you mean the equation 2x2 + 12x - 10 = 0. Divide by 2: x2 + 6x - 5 = 0 To complete the square, the constant part (the part with no variable) must be half the linear part (1/2 of 6), squared, so in this case you add 14 to each side: x2 + 6x +9 = 14 This can be factored: (x+3)2 = 14 Now, just take the square root of each side: x + 3 = (plus-or-minus) 14 Solve the resulting two equations (one for plus, one for minus).
x2 + 20x +0 =30 [(20/2)2 =100] x2 + 20x + 100 =30 +100 √(x+10)2=√130 x+10=√130 x= −10+√130 √ means square root