Daniel expanded the expression as shown.
mr023-1.jpg
What errors did he make? Check all that apply.
The first term should be positive.
The second term should be positive.
He did not distribute the mr023-2.jpg properly.
He added mr023-3.jpg and mr023-4.jpg instead of multiplying mr023-5.jpg by mr023-6.jpg.
He did not simplify the expression completely.
The last term should be mr023-7.jpg, not mr023-8.jpg.
Answers
Answered by
5
Answer:
Step-by-step explanation:
Daniel expanded the expression as shown below -2(-8x-4y+3/4)=-10x-8y- 5/4
Firstly, the expression correctly simplified is 16x+8y - 3/2
The first term is supposed to be positive because negative times negative equals positive, same for the second term.
-2 times -8x = 16x not 10x
-2 times -4y =8y not - 8y
-2 * 3/4 = -3/2 not -5/4
Daniel added -2 to -8 instead of multiplying, which is why he got the answer of -10x. He was supposed to multiply them since -2 is distributed, or multiplied by, to all numbers in the parentheses.
When distributing -2 to 3/4, Daniel made a mistake in his multiplication. He got the answer of -5/4 instead of - 3/2
Answered by
5
Answer:
abe
Step-by-step explanation:
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