# Sample quiz on addition and subtraction of polynomials Main home here.

1. What are like terms?
Terms with the same variables and exponents
Terms with the same variables and coefficients
Terms with the same exponents and coefficients
Terms that are easily likeable
2. Which of these is not a like terms with the others?
$-2x$
$22x$
$2x^2$
$20x$
3. Simplify the expression $2x^2-3x+x^2-9x$:
$3x^2+6x$
$3x^2-6x$
$3x^2+12x$
$3x^2-12x$
4. Simplify the expression $-7ab+6c+8ab-13c+21$:
$ab-19c+21$
$ab-7c+21$
$15ab-7c+21$
$a^2b^2-7c^2+21$
5. Simplify the expression $a+b-a+2b^2$:
$3b^2$
$2b^3$
$2a+b^2$
$b+2b^2$
6. Remove brackets from the expression $(x^2-2xy+12)-(2x-8y+10)$:
$x^2-2xy+12+2x+8y-10$
$x^2-2xy+12-2x+8y-10$
$x^2+2xy+12-2x+8y-10$
$x^2-2xy+12-2x+8y+10$
7. Simplify $(2x^2-7xy-y^2)+(3x^2-3xy+y^2)$:
$5x^2+10xy$
$5x^2-10xy$
$5x^2-10xy-2y^2$
$5x^2-10xy+2y^2$
8. Simplify $(-xy+abc-c^2)-(xy-2abc+4c^2)$:
$-2xy+3abc-5c^2$
$-2xy+3abc+5c^2$
$-2xy-3abc-5c^2$
$-2xy-abc-5c^2$
9. Simplify $(a^2+2b^2-3c^2)-(-a^2+2b^2+3c^2)$:
$-2a^2+6c^2$
$-2a^2-6c^2$
$2a^2+6c^2$
$2a^2-6c^2$
10. Simplify $(x-y-z)+(z-y-x)$:
$0$
$-2x$
$-2y$
$-2z$