the value of x^4 - 16 is
a. (x +2) (x – 2)( x2 + 4)
b. (x – 4)( x + 4)
c. (x2 – 4)
Give full solution. I will give u 30 points
Answers
Answered by
0
Answer:
Step-by-step explanation:
x⁴ + 16/x⁴ = 56
Adding 2[ x² × 4/x²]
x⁴ + 16/x⁴ + 2[ x² × 4/x²] = 56 + 2[ x² × 4/x²]
(x² + 4/x²)² = 56 + 2(4)
(x² + 4/x²)² = 56 + 8 = 64
x² + 4/x² = 8
Subtracting 2[x × 2/x]
x² + (2/x)² - 2 [ x× 2/x] = 8 - 2[ x × 2/x]
(x - 2/x)² = 8 - 2(2)
(x - 2/x)² = 8-4=4
x - 2/x = √4 = 2
I hope this will help you
(-:
Similar questions