Substitute a=2,b=−1 and c=−63 into the quadratic formula n=2a−b±b2−4ac
n=2×21±(−1)2−4×2(−63)
Simplify the expression
n=41±(−1)2−4×2(−63)
Simplify the expression
More Steps
Evaluate
(−1)2−4×2(−63)
Evaluate the power
1−4×2(−63)
Multiply
More Steps
Multiply the terms
4×2(−63)
Rewrite the expression
−4×2×63
Multiply the terms
−504
1−(−504)
If a negative sign or a subtraction symbol appears outside parentheses, remove the parentheses and change the sign of every term within the parentheses