Question
Solve the equation(The real numbers system)
a≈−2.330746
Evaluate
21a−31a−64×8a3=32
Evaluate
More Steps

Evaluate
21a−31a−64×8a3
Cancel out the common factor 2
21a−31a−32×8a3
Multiply the terms
More Steps

Evaluate
−32×8a3
Cancel out the common factor 2
−31×4a3
Multiply the terms
−3×4a3
Multiply the terms
−12a3
21a−31a−12a3
Subtract the terms
More Steps

Evaluate
21a−31a
Collect like terms by calculating the sum or difference of their coefficients
(21−31)a
Subtract the numbers
61a
61a−12a3
61a−12a3=32
Multiply both sides of the equation by LCD
(61a−12a3)×12=32×12
Simplify the equation
More Steps

Evaluate
(61a−12a3)×12
Apply the distributive property
61a×12−12a3×12
Simplify
a×2−a3
Use the commutative property to reorder the terms
2a−a3
2a−a3=32×12
Simplify the equation
More Steps

Evaluate
32×12
Simplify
2×4
Multiply the numbers
8
2a−a3=8
Move the expression to the left side
2a−a3−8=0
Solution
a≈−2.330746
Show Solution

Solve the equation(The complex numbers system)
a1≈1.165373−1.440237i,a2≈1.165373+1.440237i,a3≈−2.330746
Evaluate
21a−31a−64×8a3=32
Simplify
More Steps

Evaluate
21a−31a−64×8a3
Cancel out the common factor 2
21a−31a−32×8a3
Multiply the terms
More Steps

Evaluate
−32×8a3
Cancel out the common factor 2
−31×4a3
Multiply the terms
−3×4a3
Multiply the terms
−12a3
21a−31a−12a3
Subtract the terms
More Steps

Evaluate
21a−31a
Collect like terms by calculating the sum or difference of their coefficients
(21−31)a
Subtract the numbers
61a
61a−12a3
61a−12a3=32
Multiply both sides of the equation by LCD
(61a−12a3)×12=32×12
Simplify the equation
More Steps

Evaluate
(61a−12a3)×12
Apply the distributive property
61a×12−12a3×12
Simplify
a×2−a3
Use the commutative property to reorder the terms
2a−a3
2a−a3=32×12
Simplify the equation
More Steps

Evaluate
32×12
Simplify
2×4
Multiply the numbers
8
2a−a3=8
Move the expression to the left side
2a−a3−8=0
Calculate
a≈−2.330746a≈1.165373+1.440237ia≈1.165373−1.440237i
Solution
a1≈1.165373−1.440237i,a2≈1.165373+1.440237i,a3≈−2.330746
Show Solution
