Answer:
farming for points sorry
Step-by-step explanation:
To solve this problem you will need to multiply the terms using distributive property
(5+√3)(5-√3)= 25-5√3+5√3-3)=22
choice b
Answer:
128
Step-by-step explanation:
Quotient means to divide. So i.e you want to work out 640÷5.
A quick trick to divide by 5 (Without a calculator) is to double the number, and the divide by 10.
so i.e we get 640x2 = 1280.
Then 1280÷10 = 128.