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Daniel expanded the expression as shown. What errors did he make? Select three options.
-2(-8x-4y+3/4)=-10x-8y-1 1/4
A. The first term should be positive.
B. The second term should be positive.
C.The last term should be -1 1/2, not -1 1/4.
D. He divided -8 by -2 instead of multiplying -8 by -2.
E. He did not simplify the expression completely.

Respuesta :

texaschic101

Answer:

Step-by-step explanation:

-2(-8x - 4y + 3/4) =

16x + 8y - 3/2 ....(-3/2 is the same as - 1 1/2)

errors.....

A. the first term should be positive

B. the second term should be positive

C. the last term should be - 1 1/2

Daniel expanded the expression . The errors made by Daniel are

A. The first term should be positive.

B. The second term should be positive.

C. The last term should be -1 1/2, not -1 1/4.

Given :

Daniel expanded the expression as shown

[tex]-2(-8x-4y+3/4)\\-10x-8y-1 1/4[/tex]

Lets multiply -2 inside the parenthesis and see what happens

[tex]-2(-8x-4y+3/4) \\-2 (-8x)-2(-4y)-2(\frac{3}{4} )[/tex]

we know that negative times negative is positive

Also to simplify the fraction ,we can cancel out 2  and 4

[tex]-2 (-8x)-2(-4y)-2(\frac{3}{4} )\\+16x+8y-\frac{3}{2} \\+16x+8y-1\frac{1}{2} \\[/tex]

So the first and second terms are positive

Also the constant term is -1 1/2

So the errors he make are

A. The first term should be positive.

B. The second term should be positive.

C.The last term should be -1 1/2, not -1 1/4.

Learn more : brainly.com/question/24266775

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