Question

Which of the following expressions are trinomials?

• A. $3x+5y^2+16x^{2}y{z}^3$
• B. $5y^8+17x^3$
• C. $4v^3+7x{y}^4+5x^{3}yz$
• D. $3x^3{y}^{7}z$

Answer 1

Answer: (A), (C)

$4v^3+7x{y}^4+5x^{3}yz$

An algebraic expession having three terms is calles a trinomial.

• $3x+5y^2+16x^{2}y{z}^3$ has three terms such as $3x,5y^2$ and $16x^{2}y{z}^3$. So it is a trinomial.
• $5y^8+17x^3$ has only two terms such as $5y^8$ and $17x^3$. Hence it is a binomial.
• $4v^3+7x{y}^4+5x^{3}yz$ has three terms such as $4v^3,7x{y}^4$ and $5x^{3}yz$. This expression is a trinomial.
• $3x^3{y}^{7}z$ has only one term. Hence, it is a monomial.

$3x+5y^2+16x^{2}y{z}^3$ and $4v^3+7x{y}^4+5x^{3}yz$ are trinomials.