(3x+2)+(2x+4)
5x+6
(4x+2)-(2x+1)
2x+1
(3m+4m2-7)+(-5m-9+2m)
4m2-16
(−4k4 + 14 + 3k4) + (−3k4 − 14k2 − 8)
−7k4− 11k2 + 6
Terms with the same variable and the same exponent
Like Terms
(5x2+7)+ (5x2+9)
10x2+16
(5x2+5)-(3x2+1)
2x2+4
(8x2−1)+(4x2−3x)
12x2−3x−1
(3 − 6n5 − 8n4 ) − (−6n4 − 3n − 8n5)
2n5 − 2n4 + 3n + 3
The numerical factor of a term
Coefficents
(x+6)(x2+1)
x2+x+7
(7x2+9x+98)-(7x2+9x+98)
0
(8x2−1)−(4x2−3x)
4x2+3x−1
(−x4 + 13x5 + 6x3 ) + (6x3 + 5x5 + 7x4 )
18x5 + 6x4 + 12x3
An expression consisting of variables and coefficients, with operations of addition, subtraction, and multiplication, but no division by a variable.
Polynomial
(7.8x+2)+(3.2x+54)
11+56
(a3-2a2)-(3a2-2a3)
5a3-5a2
(3y2+5y-4)+(5y2-6y+9)
8y2-y+5
(13n2 + 11n − 2n4 ) + (−13n2 − 3n − 6n4 )
−8n4 + 8n
Terms that represent fixed numerical values
Constants
(0.25x-2)+(1x-9)
1.25x-11
(7x2-12y+10)-(x2-45y+35)
6x2+33y-25
(3y2+5y-4)-(5y2-6y+9)
-2y2+11y-13
(−7x5 + 14 − 2x) + (10x4 + 7x + 5x5 )
−2x5 + 10x4 + 5x + 14
a letter that represents the unknown value in an expression
variable