Substitute a=1,b=−19 and c=−1 into the quadratic formula x=2a−b±b2−4ac
x=219±(−19)2−4(−1)
Simplify the expression
More Steps
Evaluate
(−19)2−4(−1)
Simplify
(−19)2−(−4)
Rewrite the expression
192−(−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