Which expression can you simplify by combining like terms?

clear check

6d2+5cd−3dc+8

12c2−8d2c+3dc+4

7d2−3c2+6d−c

16c2+8cd+7c−8d

Which statement is true 1.the pythagorean theorem can be used to find the missing side of any triangle 2.the pythagorean theorem can be used to find the missing side of any polygon 3. the pythagorean theorem can be used to find the missing side of any right triangle 4.the pythagorean theorem can be used to find the missing side of any isosceles triangle

In the triangles, bc =de and ac fe.if the mzc is greater than the mze, then ab isdfelth

Labc is reflected across x = 1 and y = -3. what are the coordinates of the reflection image of a after both reflections?