Find x if 132x = 70 eight.
-
A.
5 -
B.
3 -
C.
6 -
D.
1
Correct Answer: Option C
Explanation
132x = 708
( 1 × x^2 + 3 × x^1 + 2 × x^0 )
( 7 × 8^1 + 0 × 8^0 )
( x^2 + 3x + 2 − 56 = 0 )
( x^2 + 3x − 54 = 0 )
x(x + 9)−6(x + 9) = 0
(x + 9)(x − 6) = 0
Either (x + 9) = 0 or (x − 6) = 0
x = − 9 or +6
The positive values for x = 6
The base number for 132x = 1326
There is an explanation video available below.