Question

Matt and Karen, both run to you to settle a dispute. They were working on a math problem, and got different answers. Wisely, you decide to look at their work to see if you can spot the source of confusion.

Matt

6 – 4(3 – 5)2 + 30 ÷ 5
6 – 4(–2)2 + 30 ÷ 5
6 – 4(4) + 30 ÷ 5
6 – 16 + 30 ÷ 5
−10 + 30 ÷ 5
20 ÷ 5
4
Karen

6 – 4(3 – 5)2 + 30 ÷ 5
6 – 4(–2)2 + 30 ÷ 5
6 – 4(−4) + 30 ÷ 5
6 + 16 + 30 ÷ 5
6 + 16 + 6
22 + 6
28 Explain to Matt and Karen who, if either, is correct, and identify errors that you find. Provide the correct manner to fix those solutions, and identify the corr

Answer 1

Can someone please help!

Answer 2

@SolomonZelman

Answer 3

Karen is right
because when she *(-2)2 she got -4

Answer 4

could you write both of them out? @heyitzkelly_marie1484

Answer 5

Because I dont undertand

Answer 6

Ok so look at the second step in both of their
6-4(3-5)2+30/5 3-5 is -2
6-4(-2)2+30/5 (-2)2 is -4 because a negative times a positive is negative
6-4(-4)+30/5 -4(-4) is 16 because a negative times a negative is a positive
6 + 16+ 30/5 30/5 is 6
6+16+6
28

Answer 7

Im Lost still? Could you write it where both are compared then the difference is spotted out?

Answer 8

ok one min

Answer 9

Thank you

Answer 10

Matt

6 – 4(3 – 5)2 + 30 ÷ 5
6 – 4(–2)2 + 30 ÷ 5
6 – 4(4) + 30 ÷ 5
6 – 16 + 30 ÷ 5
−10 + 30 ÷ 5
20 ÷ 5
4



Karen

6 – 4(3 – 5)2 + 30 ÷ 5
6 – 4(–2)2 + 30 ÷ 5
6 – 4(−4) + 30 ÷ 5 the difference is here this one is negative and Matt's up top is positive
6 + 16 + 30 ÷ 5
6 + 16 + 6
22 + 6
28

Answer 11

So this is how its suppose to be written out?

Answer 12

Where is Matt difference

Answer 13

Matt got a positive four instead of a negative for