SOLUTION: If | -2X + 9 | = 3 then the possible value of | -X |

SOLUTION: If | -2X + 9 | = 3 then the possible value of | -X | - X^2 would be : A)30 B)-30. C)-42. D)42

Question 1015114: If | -2X + 9 | = 3 then the possible value of
| -X | - X^2 would be :
A)30 B)-30. C)-42. D)42
Answer by rothauserc(4718) (Show Source): You can put this solution on YOUR website!
| -2X + 9 | = 3
we have two cases to evaluate
:
1) -2X +9 = 3
-2X = -6
X = 3
:
2) -(-2x+9) = 3
2X -9 = 3
2X = 12
X = 6
:
now consider | -X | - X^2
:
1) For X=3
3 - 3^2 = -6
:
2) For X=6
6 - 36 = -30
:
******************************
The answer is B

RELATED QUESTIONS
1. Which of the following values is NOT equal to 34(58+9)? A. 34 x 67 B. 58(34+9) C.... (answered by Fombitz)