PLEASE HELP WILL GIVE BRAINLIST IF I CAN FIGURE IT OUT

Answer:
Step-by-step explanation:
Multiply 7*4 and sqrt8*sqrt5, resulting in 28sqrt40.
sqrt40 can be simplified to 2sqrt10.
Therefore, 10 stays under the sqrt and 2 comes out.
2*28=56.
Therefore, the answer is 56sqrt10.