Answer:
n= ±(7/2)
Explanation:
So this answer isn't going to be pretty,
Set the equation equal to zero:
4n²-49=0
Add 49 from both sides:
4n²=49
Divide 4 from both sides:
n²=(49/4)
Square root both sides:
n= ±(7/2)
Thats the answer, because to include the plus or minus symbol.