(2x + 1)(x + 1)
x = -1/2, -1
1^2 + 1^2 + 1^2 + 1^2 + 1^2 + 1^2 = 1 + 1 + 1 + 1 + 1 + 1 = 5
104
(2x + 1)(2x + 1) or (2x + 1)2 so x = -0.5
-x^2 - 11x - 30 If you intended -1(x squared), making a quadratic equation, the solutions are -1 and +6.
79, -79
The two solutions are x = 2 and x = 1/2 so x = 2 is the greatest.
1 squared plus 8 squared or 4 squared plus 7 squared
If: 2x+y = 5 and x2-y2 = 3 Then the solutions work out as: (2, 1) and ( 14/3, -13/3)
The solutions are: x = 4, y = 2 and x = -4, y = -2
If you mean 5x^2 -7x +2 = 0 then it is a quadratic equation with solutions of x = 2/5 or x = 1
8 + X SQUARED
These are two expressions, not equations. Expressions do not have solutions, only equations do. NB equations include the equals sign.