algebraic expression

Question

my questions are-
1. subtract the following algebraic expression-25abc+16a^3 from -15bca-35a^3
2.what should be added to 23x^2-11xy+15y^2 to get 22xy-3x^2-5y^2
3.express each of the following as a monomial- a. 1/2abc * -4ab^2
b. -5x^2y^2 * 5y^2x^2
 x means not into it is x value or unknown value and i am grade 8 give me the answers in detail with step soon  and all the answer should be correct  and ^2 mean square exponent and ^3 means cube exponent

Answer 1

Hi Adithi,

 

I answered these questions in the comments section of the other problem.

 

Mark