plz factorize (i)x^4+4
(ii) x^4 – 8x^2 + 16
Answers
Answered by
2
i ) x⁴ + 4
( x² - 2x + 2 ) ( x² + 2x + 2 )
ii ) x⁴ - 8x² + 16
( x² - 4 ) ²
Answered by
5
Step-by-step explanation:
Question 1:
⇒ x⁴+4
Answer:
⇒ x⁴+4
⇒ (x²)² + (2)²
Adding and subtracting 4x²,
⇒ (x²)²+ (2)²+ 4x²-4x²
⇒ [(x²)² + (2)² + 4x²] - (2x²)
And,
⇒ (x²+2)²-(2x)² [(a²-b²) = (a+b)(a-b)]
⇒ (x²+2+2x) (x²+2-2x)
⇒ (x²+2x+2) (x²-2x+2)
Question 2:
⇒ x⁴-8x²+16
Answer:
⇒ (x⁴-8x²+16)
⇒ (x²-4) (x²-4)
⇒ (x+2)(x-2) (x+2)(x-2)
⇒ (x+2)² (x-2)²
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