Question
Solve the quadratic equation
Solve using the quadratic formula
Solve by completing the square
Solve using the PQ formula
m1=4−51,m2=4+51
Alternative Form
m1≈−3.141428,m2≈11.141428
Evaluate
m2−8m−35=0
Substitute a=1,b=−8 and c=−35 into the quadratic formula m=2a−b±b2−4ac
m=28±(−8)2−4(−35)
Simplify the expression
More Steps

Evaluate
(−8)2−4(−35)
Multiply the numbers
More Steps

Evaluate
4(−35)
Multiplying or dividing an odd number of negative terms equals a negative
−4×35
Multiply the numbers
−140
(−8)2−(−140)
Rewrite the expression
82−(−140)
If a negative sign or a subtraction symbol appears outside parentheses, remove the parentheses and change the sign of every term within the parentheses
82+140
Evaluate the power
64+140
Add the numbers
204
m=28±204
Simplify the radical expression
More Steps

Evaluate
204
Write the expression as a product where the root of one of the factors can be evaluated
4×51
Write the number in exponential form with the base of 2
22×51
The root of a product is equal to the product of the roots of each factor
22×51
Reduce the index of the radical and exponent with 2
251
m=28±251
Separate the equation into 2 possible cases
m=28+251m=28−251
Simplify the expression
More Steps

Evaluate
m=28+251
Divide the terms
More Steps

Evaluate
28+251
Rewrite the expression
22(4+51)
Reduce the fraction
4+51
m=4+51
m=4+51m=28−251
Simplify the expression
More Steps

Evaluate
m=28−251
Divide the terms
More Steps

Evaluate
28−251
Rewrite the expression
22(4−51)
Reduce the fraction
4−51
m=4−51
m=4+51m=4−51
Solution
m1=4−51,m2=4+51
Alternative Form
m1≈−3.141428,m2≈11.141428
Show Solution
