What is the value of x in the equation below?
What is the value of x in the equation below?
4 + √(1-3x) = 12
Answer/Solution
-21
Steps/Work
4 + √(1-3x) = 12
(4-4) + √(1-3x) = 12 - 4 = √(1-3x) = 8
(√(1-3x))^2 = (8)^2 = 1-3x = 64
(1 -1) - 3X = 64 - 1 = -3x = 63
(-3x) / -3 = 63 / -3 = x = -21
Correct option: C) -21
(4-4) + √(1-3x) = 12 - 4 = √(1-3x) = 8
(√(1-3x))^2 = (8)^2 = 1-3x = 64
(1 -1) - 3X = 64 - 1 = -3x = 63
(-3x) / -3 = 63 / -3 = x = -21
Correct option: C) -21