Question
Solve the quadratic equation
Solve using the quadratic formula
Solve by completing the square
Solve using the PQ formula
d1=5−22,d2=5+22
Alternative Form
d1≈0.309584,d2≈9.690416
Evaluate
d2−10d=−3
Move the expression to the left side
d2−10d+3=0
Substitute a=1,b=−10 and c=3 into the quadratic formula d=2a−b±b2−4ac
d=210±(−10)2−4×3
Simplify the expression
More Steps

Evaluate
(−10)2−4×3
Multiply the numbers
(−10)2−12
Rewrite the expression
102−12
Evaluate the power
100−12
Subtract the numbers
88
d=210±88
Simplify the radical expression
More Steps

Evaluate
88
Write the expression as a product where the root of one of the factors can be evaluated
4×22
Write the number in exponential form with the base of 2
22×22
The root of a product is equal to the product of the roots of each factor
22×22
Reduce the index of the radical and exponent with 2
222
d=210±222
Separate the equation into 2 possible cases
d=210+222d=210−222
Simplify the expression
More Steps

Evaluate
d=210+222
Divide the terms
More Steps

Evaluate
210+222
Rewrite the expression
22(5+22)
Reduce the fraction
5+22
d=5+22
d=5+22d=210−222
Simplify the expression
More Steps

Evaluate
d=210−222
Divide the terms
More Steps

Evaluate
210−222
Rewrite the expression
22(5−22)
Reduce the fraction
5−22
d=5−22
d=5+22d=5−22
Solution
d1=5−22,d2=5+22
Alternative Form
d1≈0.309584,d2≈9.690416
Show Solution
