step by step ans needed
pls help me these questions..
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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)
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