Question

Two expressions are shown below. Which of the following is the DIFFERENCE obtained when subtracting expression II from expression I?

I. y2−4xz+z2
II. x2+xz+2y2


A. −y2−5xz+z2−x2

B. 3y2−3xz+z2−x2

C. 3y2−3xz+z2+x2

D. y2+5xz−z2+x2

Answer 1

D

Explanation:

`x^(2)` + xz +2
`y^(2)` - (
`y^(2)` - 4xz +
`z^(2)`)

`x^(2)` + xz + 2
`y^(2)` -
`y^(2)` + 4xz -
`z^(2)`

2
`y^(2)` -
`y^(2)` + xz + 4xz -
`z^(2)` +
`x^(2)`

`y^(2)` + 5xz -
`z^(2)` +
`x^(2)`

Answer 2

the answer is c

Explanation:

just didit