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Mathematics
Stevens
2 January, 19:18
If a = 5i - 6j and b = - 2i + 4j, find - 3a + 2b
+5
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Kaliyah Adkins
2 January, 23:07
0
-19i + 26j
Step-by-step explanation:
-3 (5i - 6j) + 2 (-2i + 4j)
Distribute/multiply the - 3 to everything in the parentheses
-15i + 18j + 2 (-2i + 4j)
Distribute/multiply the 2 to everything in the parentheses
-15i + 18j - 4i + 8j
Combine like terms
-19i + 26j
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