Simplification or solve without calculator

solve this

solve this

Rewriite problem by either distributings or factoring and then solve. Question 3, 4, and 5 have no numbers in them, therefore, they can't be solved with a calculator. Q. 51(48)+51(50)+51(52) =_____

Rewriite problem by either distributings or factoring and then solve. Question 3, 4, and 5 have no numbers in them, therefore, they can't be solved with a calculator. Q. xy-xz =___

Rewriite problem by either distributings or factoring and then solve. Question 3, 4, and 5 have no numbers in them, therefore, they can't be solved with a calculator. Q. abc-xyz =____.

Rewriite problem by either distributings or factoring and then solve. Question 3, 4, and 5 have no numbers in them, therefore, they can't be solved with a calculator. Q. (6times57)+(6times13) =___

No cell can live without

Ophiura is without

An animal without gall bladder