Question

show that (x²+4) is a factor of x⁴+9x²+20​

Answer 1

Answer:

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Answer 2

Answer:

x^4+9x^2+20

Step-by-step explanation:

(x^2)^2+9x^2+20

(x^2)^2+5x^2+4x^2+20

(x^2+5)x^2+4(x^2+5)

(x^2+5)(x^2+4)