Question

2. The degree of the polynomial 3x6 – 5x8 + 4x5 – 6 is ________.
a. 6 b. 8 c. 5 d. -5
3. Identify the like terms.
a. 3x4y, 7yx4
z b. 4x3yz, -9zx3y c. -ab5
, 7ba5 d. 4xy, 7x2y
4. The constant term in the expression 2x + y + 6z – 5 is _________.
a. 2 b. 1 c. -5 d. 6
5. The simplified form of -2a (3b – c) is __________.
a. 6ab – 2ac b. -6ab – 2ac c. -6ac – c d. -6ab + 2ac

Answer 1

2.The degree of the polynomial 3x⁶ – 5x⁸ + 4x⁵ – 6 is:

Answer: b. 8

It's a polynomial in one variable, So, to find the degree, we need to check the highest power in the variables.

3. Identify the like terms:

Answer: b. 4x³yz and -9zx³y

like terms refer to the terms with same variables and the respective variable are raised to the same power.

4. The constant term in the expression 2x + y + 6z – 5 is _________.

Answer: -5

Constant term are the terms whose value doesn't change. In the given expression the remaining three terms are not constant as they contain variables.

5. The simplified form of -2a (3b – c) is __________

Answer: d. -6ab + 2ac

⇛ -2a (3b – c)

By using distributive property

⇛ -2a(3b) -2a(-c)

⇛ -6ab + 2ac