Question

SOMEONE ANSWER HURRY PLEASE

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.

Answer 1

A, B, and C

Explanation:

Let's simply the equation first

• -2(-8 - 4y + 3/4)
• 16 + 8y - 1 1/2

What did Daniel do wrong?

Well, let's break down what I did and compare it to Daniel.

• I multiplied -2 and -8x to get 16x. A negative number times a negative number is positive, and 2 times 8 is 16

Daniel, on the other hand, added the two terms.

The first term should be positive (A)

• I multiplied -2 and -4y to get 8y. The same sign rules apply.

Daniel got a negative number, but it is supposed to be positive (B)

• I multiplied -2 and 3/4 should be -6/4, which simplifies to -1 2/4 which is further reduced to -1 1/2

Daniel multiplied and simplified incorrectly (C)

-Chetan K