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(3 - 4p)² = 9 - 24p + 16p²
b)
(3x - 1)³ = 27x³ - 27x² + 9x - 1
a)
(1 - 3x)(1 + 3x) + 9(1/3 - x)² = 1 - 9x² + 9(1/9 - 2x/3 + x²) = 1 - 9x² + 1 - 2x/3 + 9x² = 2 - 2x/3 = (6 - 2x)/3
a)
(3√2 - 3)²(3√2 + 3)² = (18 - 18√2 +9)(18 + 18√2 + 9) = (27 - 18√2)(27 + 18√2) =
= 27² - (18√2)² = 729 - 648 = 81