单选题If (1-2-3-4) w = (-1) (-2) (-3) (-4), then w = ______.A-3B-2C-1D2E33
单选题
If (1-2-3-4) w = (-1) (-2) (-3) (-4), then w = ______.
A
-3
B
-2
C
-1
D
2
E
33
参考解析
解析:
To solve (1-2-3-4) w = (-1) (-2) (-3) (-4), first simplify the left side of the equation. Since 1-2-3-4 =-8, then -8w= (-1) (-2) (-3) (-4). The product of an even number of negative numbers is positive, so (-1) (-2) (-3) (-4)= 24. The original equation simplifies to -8w = 24, w = 24/(-8) = -3.
To solve (1-2-3-4) w = (-1) (-2) (-3) (-4), first simplify the left side of the equation. Since 1-2-3-4 =-8, then -8w= (-1) (-2) (-3) (-4). The product of an even number of negative numbers is positive, so (-1) (-2) (-3) (-4)= 24. The original equation simplifies to -8w = 24, w = 24/(-8) = -3.
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