Question

Factorize
(iii) x^4 – 8x² +16
​

Answer 1

Answer:

(x²-4)²

Step-by-step explanation:

x⁴ - 8x² +16

= x⁴ - (4 + 4)x² + 16

= x⁴ - 4x² +4x² + 16

= x²(x²-4)-4(x²-4)

= (x²-4)²

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