Perform the indicated operation y^4-16/y+2 ÷ y^2+4/5

What can be said about the relationship between triangles and circles? check all that apply. a) many circles can be inscribed in a given triangle b) exactly one triangle can be inscribed in a given circle c) exactly one circle can be inscribed in a given triangle d) many triangular shapes can be circumscribed about a given circle

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

The sides of a parallelogram are 24cm and 16cm. the distance between the 24cm sides is 8 cm. find the distance between the 16cm sides