Question

step by step ans needed
pls help me these questions..
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Answer 1

Answer:

a) (x +y)² - (x + y)²

= x² + y² + 2xy - (x² + y² + 2xy)

= x² + y² + 2xy - x² - y² - 2xy

= 0

b)  Same as  (a)

c) x²y⁴z⁶ - 1

same as it is

d) (x² - 8x + 16) - 121

 x² - 8x + 16 - 121

 x² - 8x - 105

e) 5a³ - 30a² + 45a

   5a(a² - 6a + 9)

f) x⁴ + 4x³ + 4x²

  x²(x² + 4x + 4)