Answer:
35
Step-by-step explanation:
i dont know how to explain how i got the anwser
Is it just x=b-cd
If so
cd=b-x
÷d. ÷d
C=b-x/d
To show: (x+y)² − (x −y)² = 4xy
Using difference of square identity:
Taking left side






hence proved

Answer:
1900 miles long
Step-by-step explanation: