Odpowiedź:
a) x²(x²-3x) + x³(x+7) -x(x²+3x²-x+1) = x⁴ - 3x³+ x⁴ + 7x³- x⁴ - 3x³ + x²- x = x⁴+ x³ + x² - x
b) 2² ×(12x² - 6x + 1) - ² ×(15x² + 9x + 2)=6x²-3x+ -10x² - 6x -½ = - 4x - 9x
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Odpowiedź:
a) x²(x²-3x) + x³(x+7) -x(x²+3x²-x+1) = x⁴ - 3x³+ x⁴ + 7x³- x⁴ - 3x³ + x²- x = x⁴+ x³ + x² - x
b) 2² ×(12x² - 6x + 1) - ² ×(15x² + 9x + 2)=6x²-3x+ -10x² - 6x -½ = - 4x - 9x