Question

Hassan writes an algebraic expression with four terms. The x-term has a coefficient of 2, and the z-term has a coefficient of -1. The expression has a constant term less than zero. Which expression could he have written? 2x + z + 5 - 6z2 2x - z - 5 + 2z2 -2x - z - 5 + 2z2 -2x + z - 5 + 2z2

Answer 1

The second one would be correct; 2x - z - 5 + 2z2

Answer 2

The possible expression is:

`2x-z-5+2z^2`

Explanation:

It is given that:

The x-term has a coefficient of 2.

and the z-term has a coefficient of -1.

Also, the constant term has a constant term less than zero.

1)

`2x+z+5-6z^2`

In this expression the coefficient of z is not -1.

Hence, this option is incorrect.

2)

`2x-z-5+2z^2`

This expression holds all the given property and hence is the possible answer.

3)

`-2x-z-5+2z^2`

In this expression the coefficient of x is not 2.

Hence, this option is incorrect.

4)

`-2x+z-5+2z^2`

In this expression the coefficient of x is not 2.

Hence, this option is incorrect.