Question 1

Combine like terms: $15m^3+6m^2+2m^3$

Accepted Answer

$17m^3+6m^2$

Answer

Cannot be simplified

Answer

$23m^8$

Answer

$17m^5+6m^2$

Question 2

Add: $(2x^2-x)+(x^2+3x-1)$

Accepted Answer

$3x^2+2x-1$

Answer

No like terms

Answer

$x^2-4x-1$

Answer

$3x^4-2x-1$

Question 3

Add: $(-2ab+b) +(2ab+a)$

Accepted Answer

$b+a$

Answer

0

Answer

$ba$

Answer

$2ab+b+a$

Question 4

Subtract: $(2x^2+6)-(4x^2)$

Accepted Answer

$-2x^2+6$

Answer

$6x^2 +6$

Answer

$4$

Answer

$2x^2+6$

Question 5

Subtract $(a^4-2a)-(3a^4-3a+1)$

Accepted Answer

$-2a^4+a-1$

Answer

$-2a^4-5a+1$

Answer

$a^4-3a^4-2a+3a-1$

Answer

$-2a^8+a^2-1$

Question 6

The length of a rectangle is represented by $4a+3b$ and its width is represents by $7a-2b$. Write a polynomial that describes it's perimeter

Accepted Answer

$22a+2b$

Answer

$3a+5b$

Answer

$28a^2-6b^2$

Answer

$11a-b$

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