Odpowiedź:
2.
-3ab + b2 + 3ab - 2ab +(-42ab) = b2 - 44ab
4x +7(x - 5) - 8x - 2(-3x + 8) + 10 - 12x =4x +7x - 35 - 8x +6x - 16 +10 - 12x = - 3x - 41
7x + (-6x +7) - (-24x - 5) + 32x - 43 = 7x - 6x +7 +24x +5 + 32x - 43 = 57x - 30
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Odpowiedź:
2.
-3ab + b2 + 3ab - 2ab +(-42ab) = b2 - 44ab
4x +7(x - 5) - 8x - 2(-3x + 8) + 10 - 12x =4x +7x - 35 - 8x +6x - 16 +10 - 12x = - 3x - 41
7x + (-6x +7) - (-24x - 5) + 32x - 43 = 7x - 6x +7 +24x +5 + 32x - 43 = 57x - 30