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Maxwell2539
31.03.2020 •
Mathematics
Solve the following absolute value equation.
\2+5) = 8
x = 51
X = - [?]
Notice that the negative sign is already entered!
Enter
Solved
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Ответ:
x = - 61
Step-by-step explanation:
The absolute function always returns a positive value.
However, the expression inside can be positive or negative.
Given
| x + 5 | = 56, thus
x + 5 = 56 OR - (x + 5) = 56
Solve
x + 5 = 56 ( subtract 5 from both sides )
x = 51 ← given solution
OR
- (x + 5) = 56 ← distribute left side
- x - 5 = 56 ( add 5 to both sides )
- x = 61 ( multiply both sides by - 1 )
x = - 61 ← required solution
Ответ:
b) 60 on the test
c) with 0 hours of homework, should expect a score of 45 on the test.