Question

2 classify the following 3y-1,z2-5z + 1,100 , aba-b, 7mn, A2 -b2
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Answer 1

Step-by-step explanation:

Answer:

the above expression is obtained by adding 7xy with 5. Here 7xy is obtained by multiplying 7,x and y

the above expression is obtained by subtracting the product of 5 and x from the product of 4,x and x

Answer 2

Monomials : $100$ and $100$

Binomials : $3y-1$, $aba-b$, and $A^2-b^2$

Tinomial: $z^2-5z + 1$

Step-by-step explanation:

The given options contain various types of expressions. SOSomeme are monomials, some binomials, some quadratic as well.

Let us take them one by one and classify them

• $3y-1$ : It is consisting of two terms and have a subtraction sign in between, hence it can be called a binomial in one variable(y)
• $z^2-5z + 1$  : It is consisting of three terms, hence it can be called a trinomial in one variable(z). It is also a quadratic equation.
• $100$ : It is just a number, so can be called a monomial or simply a constant.
• $aba-b$: It is consisting of two terms and have a subtraction sign in between, so it can be called a binomial in two variables(a and b)
• $7mn$: it is a monomial.
• $A^2-b^2$: It is a binomial in two variables.