Question

Daniel expanded the expression as shown. Negative 2 (Negative 8 x minus 4 y + three-fourths) = negative 10 x minus 8 y minus 1 and one-fourth What errors did he make? Select three options. The first term should be positive. The second term should be positive. The last term should be Negative 1 and one-half, not Negative 1 and one-fourth. He divided Negative 8 by Negative 2 instead of multiplying Negative 8 by Negative 2. He did not simplify the expression completely.

Answer 1

Option 1,2,3

Explanation:

got it right

Answer 2

Options A, B and C are correct.

Explanation:

The given expression is

`-2\left(-8x-4y+(3)/(4)\right)`

Using distributive property, we get

`-2(-8x)-2(-4y)-2\left((3)/(4)\right)`

`16x+8y-(6)/(4)`

`16x+8y-(3)/(2)`

`16x+8y-1(1)/(2)`

It is given that Daniel expanded the expression as

`-2\left(-8x-4(3)/(4)\right)=-10x-8y-1(1)/(4)`

The first term should be positive.

The second term should be positive.

The last term should be Negative 1 and one-half, not Negative 1 and one-fourth.

Therefore, options A, B and C are correct.