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• Polynomials
• Operations on Polynomials
• Combining like terms

# Combining like terms

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•  Question 1: 1 pts
$3abx^2$ and $-3abx$
like terms
•  Question 2: 1 pts
2 and
are like terms
•  Question 3: 1 pts Select an option with like terms
 $2x^2, -3x^2y, 2xy$ $3xy^2, 5xy^3, 2xy^2$ $3x, 2, 4x$ $-2x^2y, 5x^2y, -\sqrt{3}x^2y$
•  Question 4: 1 pts Is the following statement true or false? $$x + x = x^2$$
•  Question 5: 1 pts Combine like terms in polynomial $3x-5x$.
 $2x$ $-2$ $-2x^2$ $-2x$
•  Question 6: 2 pts Simplify $x^2+x^3$
 $5x$ $x^5$ $5x+x^5$ cannot be simplified
•  Question 7: 2 pts Simplify $5x^2-3x-7x^2+3-2x-3$
 $-2x^2-5x-6$ $2x^2-5x$ $-2x^2-5x$ cannot be simplified
•  Question 8: 2 pts Simplify $3ab^2-2ab-4ab^2+4ab+ab^2$
 $8ab^2+2ab$ $2ab$ $6ab$ cannot be simplified
•  Question 9: 3 pts Simplify: $2(a+b)-4(a+b)$
 $6(a+b)$ $2(a+b)$ $-2(a+b)$ cannot be simplified
•  Question 10: 3 pts Combine like terms: $$\frac{3}{4a} + \frac{3}{2a}-\frac{1}{4a}$$
 $\frac{1}{a}$ $\frac{2}{a}$ $\frac{1}{2a}$ $\frac{2}{4a}$
•  Question 11: 3 pts Simplify: $5(a^2-b)-6(a^2-b)+3(a^2-b)$
 $a^2$ $a^2+b$ $b$ $2(a^2-b)$
•  Question 12: 3 pts Simplify: $\frac{1}{3}(x-2y^2)-\frac{1}{6}(x-2y^2)$
 $\frac16(x-2y^2)$ $x-2y^2$ $-\frac13(x-2y^2)$ $-\frac16(x-2y^2)$