Question
Solve the equation
x1=−648,x2=648
Alternative Form
x1≈−1.906369,x2≈1.906369
Evaluate
31x6−21x6=−8
Subtract the terms
More Steps

Evaluate
31x6−21x6
Collect like terms by calculating the sum or difference of their coefficients
(31−21)x6
Subtract the numbers
More Steps

Evaluate
31−21
Reduce fractions to a common denominator
3×22−2×33
Multiply the numbers
62−2×33
Multiply the numbers
62−63
Write all numerators above the common denominator
62−3
Subtract the numbers
6−1
Use b−a=−ba=−ba to rewrite the fraction
−61
−61x6
−61x6=−8
Change the signs on both sides of the equation
61x6=8
Multiply by the reciprocal
61x6×6=8×6
Multiply
x6=8×6
Multiply
x6=48
Take the root of both sides of the equation and remember to use both positive and negative roots
x=±648
Separate the equation into 2 possible cases
x=648x=−648
Solution
x1=−648,x2=648
Alternative Form
x1≈−1.906369,x2≈1.906369
Show Solution
