Odpowiedź:
a) (1-0,2m)(1+0,2m) = 1+0,2m-0,2m-0,2m² = -0,2m² + 1
b) (3+x)²+(4-x)² = 9 + 6x + x² + 16 - 8x - x² = -2x + 25
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Odpowiedź:
a) (1-0,2m)(1+0,2m) = 1+0,2m-0,2m-0,2m² = -0,2m² + 1
b) (3+x)²+(4-x)² = 9 + 6x + x² + 16 - 8x - x² = -2x + 25