Mathematics, 01.07.2020 22:01 soviet85
Sahib tried four different solutions to the matching problem. Which of his four answers is correct?
Simplified Expression
Expression
2 a squared minus 8 a + 7
3 a squared + 5 a minus 1 minus 5 a squared minus 3 a + 8
2 a squared minus 3 a + 7
3 a squared + 4 a + 6 minus a squared minus 7 a + 1
Negative 2 a squared minus 4 a + 7
Negative 7 a squared minus 9 a + 4 + 5 a squared + 5 a + 3
Negative 2 a squared + 2 a + 7
a squared minus 6 a + 2 + a squared minus 2 a + 5
A 2-column table with 4 rows. Column 1 is labeled Simplified Expression with entries 2 a squared minus 8 a + 7, 2 a squared minus 3 a + 7, Negative 2 a squared minus 4 a + 7, Negative 2 a squared + 2 a + 7. Column 2 is labeled Expression with entries 3 a squared + 5 a minus 1 minus 5 a squared minus 3 a + 8, 3 a squared + 4 a + 6 minus a squared minus 7 a + 1, Negative 7 a squared minus 9 a + 4 + 5 a squared + 5 a + 3, a squared minus 6 a + 2 + a squared minus 2 a + 5. From column 1 to column 2, an arrow points from row 1 to row 1, from row 2 to row 2, from row 3 to row 4, and from row 4 to row 3.
A 2-column table with 4 rows. Column 1 is labeled Simplified Expression with entries 2 a squared minus 8 a + 7, 2 a squared minus 3 a + 7, Negative 2 a squared minus 4 a + 7, Negative 2 a squared + 2 a + 7. Column 2 is labeled Expression with entries 3 a squared + 5 a minus 1 minus 5 a squared minus 3 a + 8, 3 a squared + 4 a + 6 minus a squared minus 7 a + 1, Negative 7 a squared minus 9 a + 4 + 5 a squared + 5 a + 3, a squared minus 6 a + 2 + a squared minus 2 a + 5. From column 1 to column 2, an arrow points from row 1 to row 1, from row 2 to row 3, from row 3 to row 4, and from row 4 to row 2.
A 2-column table with 4 rows. Column 1 is labeled Simplified Expression with entries 2 a squared minus 8 a + 7, 2 a squared minus 3 a + 7, Negative 2 a squared minus 4 a + 7, Negative 2 a squared + 2 a + 7. Column 2 is labeled Expression with entries 3 a squared + 5 a minus 1 minus 5 a squared minus 3 a + 8, 3 a squared + 4 a + 6 minus a squared minus 7 a + 1, Negative 7 a squared minus 9 a + 4 + 5 a squared + 5 a + 3, a squared minus 6 a + 2 + a squared minus 2 a + 5. From column 1 to column 2, an arrow points from row 1 to row 3, from row 2 to row 1, from row 3 to row 4, and from row 4 to row 2.
A 2-column table with 4 rows. Column 1 is labeled Simplified Expression with entries 2 a squared minus 8 a + 7, 2 a squared minus 3 a + 7, Negative 2 a squared minus 4 a + 7, Negative 2 a squared + 2 a + 7. Column 2 is labeled Expression with entries 3 a squared + 5 a minus 1 minus 5 a squared minus 3 a + 8, 3 a squared + 4 a + 6 minus a squared minus 7 a + 1, Negative 7 a squared minus 9 a + 4 + 5 a squared + 5 a + 3, a squared minus 6 a + 2 + a squared minus 2 a + 5. From column 1 to column 2, an arrow points from row 1 to row 4, from row 2 to row 2, from row 3 to row 3, and from row 4 to row 1.
Answers: 2
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