Hola! :3
Resolvemos las expresiones:
1) 5 × (6 + x) = 5(6) + 5x
5 × (6 + x) = 30 + 5x
2) 7 × (5 - x) = 7(5) - 7x
7 × (5 - x) = 35 - 7x
3) -6 × (x - 2y + 7z - 9) = -6x - (-6)(2y) + (-6)(7z) - (-6)(9)
-6 × (x - 2y + 7z - 9) = -6x + 12y - 42z + 54
4) x × (3x - 4) = x(3x) - x × 4
x × (3x - 4) = 3x² - 4x
Espero haberte ayudado :D
Atte: Jean07122006
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Hola! :3
Resolvemos las expresiones:
1) 5 × (6 + x) = 5(6) + 5x
5 × (6 + x) = 30 + 5x
2) 7 × (5 - x) = 7(5) - 7x
7 × (5 - x) = 35 - 7x
3) -6 × (x - 2y + 7z - 9) = -6x - (-6)(2y) + (-6)(7z) - (-6)(9)
-6 × (x - 2y + 7z - 9) = -6x + 12y - 42z + 54
4) x × (3x - 4) = x(3x) - x × 4
x × (3x - 4) = 3x² - 4x
Espero haberte ayudado :D
Atte: Jean07122006