|10x - 1| = x - 10
A. -1, 1
B. 1
C. -1
D. No solution
3 answers
D. No solution
then either
10x-1=x-10 OR -10x +1 = x-10
9x = -9 or -11x = -11
x = -1 or x = +1
BUT, by definition |of anything| ≥0
so x-10≥0
x ≥ 10
So there is no solution
10x-1=x-10 OR -10x +1 = x-10
9x = -9 or -11x = -11
x = -1 or x = +1
BUT, by definition |of anything| ≥0
so x-10≥0
x ≥ 10
So there is no solution
thank you