x4 – (y + z)4

x4-(y+z)4
=(x2)2-[(y+z)2]2
using the formula=a2-b2=(a+b)(a-b)
=[x2+(y+z)2][x2-(y+z)2]
again use the same formula &
use the formula (a+b)2=a2+2ab+b2
=[x2+y2+2yz+z2][x+y+z][x-y-z]

  • 5
answer=
4[x-(y-z)]
  • -2
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