Question

Помогите пожалуйста 2°!!!!!
Очень срочно

Answer 1

По формулам сокращенного умножения:

1)

${2}^{3} + {3}^{3} = \\ = (2 + 3)( {2}^{2} - 2 \times 3 + {3}^{2} ) = \\ = 5(4 - 6 + 9) = 5 \times 7 = 35$

2)

${(3 + 2)}^{3} = \\ = {3}^{3} + 3 \times {3}^{2} \times 2 + 3 \times 3 \times {2}^{2} + {2}^{3} = \\ = 27 + 54 + 36 + 8 = 125$

3)

${8}^{2} - {6}^{2} = \\ = (8 - 6)(8 + 6) = 2 \times 14 = 28$

4)

${(8 - 6)}^{2} = \\ = {8}^{2} - 2 \times 8 \times 6 + {6}^{2} = \\ = 64 - 96 + 36 = 4$