Answer:
Step-by-step explanation:
x^4 · x^-2 = x^(4-2)= x^2 is the answer
6 / 15 = 2 / x
6x = 30
x = 30 / 6 = 5
Answer:
x = -4 is the only solution.
Step-by-step explanation:
The given equation is 2x² + 8x = x² - 16
We can find the value of x by solving the equation.
(2x² + 8x) - x² = (x² - 16) - x²
x² + 8x = - 16
(x² + 8x) + 16 = (-16) + 16
x² + 8x + 16 = 0
(x + 4)² = 0 [ Since a² + b² + 2ab = (a + b)²]
⇒ (x + 4) = 0
x = -4
Therefore, x = -4 is the only solution of the given equation.
Answer:
The correct answer is B.
Answer:
5.2 x 10^-3
Step-by-step explanation: