9 + x2(6 + x2) = A.   (x2+3)2
B.   (x + 3)2
C.   (x + 3)3
D.   15 + x4
E.   (x2+3)(x2−3)
A    B    C    D    E

[ 2,3-6742 - op net sinds 27.10.14-(E)-29.10.2023 ]

Translation in   E N G L I S H

IN CONSTRUCTION A.  
B.  
C.  
D.  
E.  

Oplossing - Solution

9 + x²(6 + x²) = 9 + 6x² + x4 = x4 + 6x² + 9 = (x² + 3)²