Factorize the following
x^4 – 81
Answers
Answered by
0
Answer:
x=3
Step-by-step explanation:
3*4=12
therefore answer will be 3
Answered by
1
Answer:
Identity used:
a² - b² = (a+b)×(a-b)
Step-by-step explanation:
x⁴ - 81
= x⁴ - 3⁴
=(x² + 3²)(x²-3²)
=(x+9)(x+3)(x-3)
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