Which expression is equivalent to 32x20y21z34 ? A 16 x 18 y 19 z 32
B 16 x 10 y 10 z 17 y
C 4 x 18 y 19 z 32 2
D 4x 10 y 10 z 17 2 y​

Simplify 5 square root of 7 end root plus 12 square root of 6 end root minus 10 square root of 7 end root minus 5 square root of 6 . (1 point) 5 square root of 14 end root minus 7 square root of 12 5 square root of 7 end root minus 7 square root of 6 7 square root of 12 end root minus 5 square root of 14 7 square root of 6 end root minus 5 square root of 7

Find the sum of the measure of the interior angles of a polygon of 9 sides ; of 32 sides

Can someone me with this problem . show your work .