Please help ill mark brainliest

Which expression is equivalent to7_/x^2 ÷ 5_/y^3? assume y# 0

With this question substitute t=3 and t=5 to determine if the two expressions are equivalent. 4(t + 3) 4t+12 which statements are true? check all that apply. a. the value of both expressions when t =5 is 32. b. the two expressions are not equivalent. c. the value of both expressions when t=3 is 15. d. the value of both expressions when t=5 is 23. e. the two expressions are equivalent. f. the value of both expressions when t=3 is 24.

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?