-x2+2.5x+1=0
x=-0.350781 x=2.85078
Negative 11
x is negative 1x is negative 2
The solutions are: x = 4, y = 2 and x = -4, y = -2
No. It's a quadratic equation, and it has two solutions.
These are two expressions, not equations. Expressions do not have solutions, only equations do. NB equations include the equals sign.
Negative 11
x = -½
x is negative 1x is negative 2
The solutions are: x = 4, y = 2 and x = -4, y = -2
No. It's a quadratic equation, and it has two solutions.
It has no solutions because the discriminant is less than zero.
If: 2x+y = 5 and x2-y2 = 3 Then the solutions work out as: (2, 1) and ( 14/3, -13/3)
These are two expressions, not equations. Expressions do not have solutions, only equations do. NB equations include the equals sign.
y equals x plus 4 when y equals 0 then x equals 2i i is the square root of negative 1
104
A negative plus a negative equals a negative.
It is a quadratic equation and its solutions are: x = 4 or x = -9