Answer:
B. -0.9, 8.9
Step-by-step explanation:
The value(s) of the variable can be found by undoing the operations done to it.
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Undo the square by taking the square root:
x -4 = ±√24 = ±2√6
Undo the subtraction by adding 4:
x = 4 ±2√6 ≈ {-0.8990, 8.8990} . . . keep enough digits to round correctly
The approximate solutions are ...
-0.9, 8.9
