1) Complete as sentenças: a)No monômio -38xo coeficiente é e a parte literal é

b)No monômio 25ab o coeficiente ée a parte literal é

2) Simplifique as expressões, reduzindo os termos semelhantes:

a) 4a-10a + 7 -7a+ 8a b) (-3x+ 5x – 8) + (6x- 4x – 3)

c) (4x – 5y + 14) – ( 18 – 2x + 8y) d) 3xy + 5x –( 4xy – 12x + 15)

3) Classifique as expressões com base no número de termos:
a) -125xy

b) 13xy + 34ab – 10

c) 65xz -28

d) -45abc + 16xy –xy2 +15

Step-by-step explanation:

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for the friend request.

when a figure, such as triangle (xyz) is reflected over the line y = x to create x'y'z' the x-coordinates and y-coordinates of the original image (pre-image) will be reversed for the image. (e.g., (x, y) > (y, x)) this means that the pre-image position of the x- and y-coordinates switch places which in turn provides a mirror like image of the original xyz.  

i notice that when i draw a line segment from x to x', that the points are parallel from each other -- they are exactly across from each other and do not intersect with any other points.  

yes, think i would see the same characteristic if you drew the line segment connecting y with the reflecting line and then y' with the reflecting line because of the essence of reflections. because it is a mirror image, each point was effected the same way which leads me to conclude that they same would apply to y and y'.

i need a diagram

step-by-step explanation:

no