Question
Find the roots
n1=23−13,n2=23+13
Alternative Form
n1≈−0.302776,n2≈3.302776
Evaluate
n2−3n−1
To find the roots of the expression,set the expression equal to 0
n2−3n−1=0
Substitute a=1,b=−3 and c=−1 into the quadratic formula n=2a−b±b2−4ac
n=23±(−3)2−4(−1)
Simplify the expression
More Steps

Evaluate
(−3)2−4(−1)
Simplify
(−3)2−(−4)
Rewrite the expression
32−(−4)
If a negative sign or a subtraction symbol appears outside parentheses, remove the parentheses and change the sign of every term within the parentheses
32+4
Evaluate the power
9+4
Add the numbers
13
n=23±13
Separate the equation into 2 possible cases
n=23+13n=23−13
Solution
n1=23−13,n2=23+13
Alternative Form
n1≈−0.302776,n2≈3.302776
Show Solution
