mate mate mate ayudaaaaaaa
Respuestas a la pregunta
Respuesta:
a) (9a - 4b) + (3a - 2b) = 9a - 4b + 3a - 2b = 12a - 6b
b) (-3a + b) - (2a - b) = -3a + b - 2a + b = -5a + 2b
c) -(x - 3y + 5z) - (4x + 3y - 8z) = -x + 3y - 5z - 4x - 3y + 8z
= -5x + 3z
d) 4x - (x² + 5x - 7) + 6 - (-4 + 3x²) = 4x - x² - 5x + 7 + 6 + 4 - 3x²
= -4x²- x + 17
e) [9a - (3a + 7) + (6 + 4a)] - (a + b) = [9a - 3a - 7 + 6 + 4a] - a - b
= [10a - 1] - a - b
= 10a - 1 - a - b
= 9a - b - 1
f) -[8 + (2x + 1)] + [-(6x - 5) - 2] = -[8 + 2x + 1] + [-6x + 5 - 2]
= -[9 + 2x] + [-6x + 3]
= -9 - 2x - 6x + 3
= -8x - 6
g) 7x + {-4x + [(-6 + 5x) - (2x - 4)] - 8x} = 7x + {-4x + [-6 + 5x - 2x + 4] - 8x}
= 7x + {-4x + [3x - 2] - 8x}
= 7x + {-4x + 3x - 2 - 8x}
= 7x + {-9x - 2}
= 7x - 9x - 2
= -2x - 2
Respuesta:
a) (9a - 4b) + (3a - 2b) = 9a - 4b + 3a - 2b = 12a - 6b
b) (-3a + b) - (2a - b) = -3a + b - 2a + b = -5a + 2b
c) -(x - 3y + 5z) - (4x + 3y - 8z) = -x + 3y - 5z - 4x - 3y + 8z
= -5x + 3z
d) 4x - (x² + 5x - 7) + 6 - (-4 + 3x²) = 4x - x² - 5x + 7 + 6 + 4 - 3x²
= -4x²- x + 17
e) [9a - (3a + 7) + (6 + 4a)] - (a + b) = [9a - 3a - 7 + 6 + 4a] - a - b
= [10a - 1] - a - b
= 10a - 1 - a - b
= 9a - b - 1
f) -[8 + (2x + 1)] + [-(6x - 5) - 2] = -[8 + 2x + 1] + [-6x + 5 - 2]
= -[9 + 2x] + [-6x + 3]
= -9 - 2x - 6x + 3
= -8x - 6
g) 7x + {-4x + [(-6 + 5x) - (2x - 4)] - 8x} = 7x + {-4x + [-6 + 5x - 2x + 4] - 8x}
= 7x + {-4x + [3x - 2] - 8x}
= 7x + {-4x + 3x - 2 - 8x}
= 7x + {-9x - 2}
= 7x - 9x - 2
= -2x - 2
Explicación paso a paso:
Espero te ayude