Implementing a function using decoder, encoder and some gates
The fact that your problem is expressed as a Sum Of two Products gives you a big pointer towards the solution, as you have two complex components and an OR gate available. So it should just be a matter of getting one component to generate one of the products, the other component to generate the other product, and then using the OR gate to combine the two to get the output. You also have two apparently randomly chosen gates to help you out.

The term ABCD’E is the easy one. You have four inputs that need to be 1 and one that needs to be 0. Combine two of the inputs that need to be 1 using the AND gate and you're down to three inputs that need to be 1 and one that needs to be 0, and that can be achieved very easily using your 3:8 decoder.

The second is harder so I'll leave you to try and figure it out, but write out the truth table and study it to see how you can combine the 8:3 encoder with the XOR gate to get the second product.