Which polynomial identity will prove that 133 = 8 + 125? difference of squares difference of cubes sum of cubes square of a binomial

The sixth grade art students are making a mosaic using tiles in the shape of right triangles.each tile has leg measures of 3 centimeters and 5 centimeters.i f there are 200 tiles in the mosaic what is the area of the mosaic.

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?

Two triangles can be formed with the given information. use the law of sines to solve the triangles. b = 49°, a = 16, b = 14