Question

if x is equals to 1 why is equals to 2 and z is equals to 5 find the value of. 1) xy+yz- zx
2) 2x²y-5yz+xy²
3) x³ -y³-z³​

Answer 1

Step-by-step explanation:

We know that the degree is the term with the greatest exponent and,

To find the degree of a monomial with more than one variable for the same term, just add the exponents for each variable to get the degree.

The given algebraic expression xy+yz has two terms. The first one is xy and the second is yz.

xy has degree 2 (x has an exponent of 1, y also has 1, and 1+1=2)

yz has degree 2 (y has an exponent of 1, z also has 1, and 1+1=2)

Since the degree is same in both the terms that is 2, therefore, the degree of xy+yz is 2.

Hence, the degree of the algebraic expression xy+yz is 2.

Answer 2

Step-by-step explanation:

✳Answer✳

$3) {2 x}^{2} y - 5yz + {xy}^{2}$