It's a third-degree polynomial with four terms.
The number it represents completely depends on the value of 'x', and even
that doesn't tell you much, because if 'x' changes, then the value of the whole
expression also changes, in a flash.
Wiki User
∙ 12y ago2x2 + 21x + 49 = 2x2 +14x +7x + 49 = 2x(x + 7) + 7(x + 7) = (2x + 7)(x + 7)
2x2 + 21x + 49= 2x2 + 14x + 7x + 49= 2x(x + 7) + 7(x + 7)= (x + 7)(2x + 7)
x2+14x+49 = (x+7)(x+7) when factored
d/dx 2x2+3x+7=4x+3
x=7
2x2 + 21x + 49 = 2x2 +14x +7x + 49 = 2x(x + 7) + 7(x + 7) = (2x + 7)(x + 7)
2x2 + 21x + 49= 2x2 + 14x + 7x + 49= 2x(x + 7) + 7(x + 7)= (x + 7)(2x + 7)
(x2 + 14x + 49) = (x + 7)2
14x+12y+7 This expression cannot be simplified any further.
3x/7 + 5y/14x = 3x*2x/(7*2x) + 5y/14x = (6x2 + 5y)/14x
x2 - 14x + 49(x - 7) (x - 7)
x2+14x+49 = (x+7)(x+7) when factored
d/dx 2x2+3x+7=4x+3
2x2 equals 5
x=7
4x2 + 28x + 49 = 4x2 + 14x + 14x + 49 = 2x(2x + 7) + 7(2x + 7) = (2x + 7)(2x + 7) or (2x + 7)2
x2 - 14x + 49 = (x - 7)2