Question

Build up algebrals expersions for the statements given below. 1. Multiply by five the number which represents x and three.​

Answer 1

Answer:

3x (5) =15x so I hope it is correct!!!

Answer 2

Answer:

In an algebraic expression, if the powers of the variables are whole numbers then the algebraic expression is a polynomial.

(i)

y+1y=y+y−1

Here, one of the powers of y is −1, which is not a whole number. So, y + 1y is not a polynomial.

(ii)

2 − 5 x−−√=2−5x12

Here, the power of x is 12, which is not a whole number. So, 2 − 5 x−−√ is not a polynomial.

(iii)

x2 + 7x + 9

Here, the powers of the variable x are 2, 1 and 0, which are whole numbers. So, x2 + 7x + 9 is a polynomial.

(iv)

2m−2 + 7m − 5

Here, one of the powers of m is −2, which is not a whole number. So, 2m−2 + 7m − 5 is not a polynomial.

(v)

10 = 10 × 1 = 10x0

Here, the power of x is 0, which is a whole numbers. So, 10 is a polynomial (or constant polynomial).