answersLogoWhite

0

x2 + 49

= x2 - (-49)

= x2 - (-1)(49)

= x2 - (i2)(72)

= x2 - (7i)2

= (x - 7i)(x + 7i)

where i is the imaginary square root of -1.

User Avatar

Wiki User

13y ago

What else can I help you with?