Question
Solve the equation
x≈1.522509
Evaluate
x(3x)2−22x−23=0
Find the domain
More Steps

Evaluate
{3x≥02x≥0
Calculate
{x≥02x≥0
Calculate
{x≥0x≥0
Find the intersection
x≥0
x(3x)2−22x−23=0,x≥0
Multiply the terms
More Steps

Evaluate
x(3x)2
Rewrite the expression
x×3x
Use the commutative property to reorder the terms
3x×x
Multiply the terms
3x2
3x2−22x−23=0
Move the expression to the right-hand side and change its sign
−22x=−3x2+23
Rewrite the expression
2x=23x2−23
Evaluate
2x=23x2−23,23x2−23≥0
Evaluate
More Steps

Evaluate
23x2−23≥0
Simplify
3x2−23≥0
Move the constant to the right side
3x2≥23
Divide both sides
33x2≥323
Divide the numbers
x2≥323
Take the 2-th root on both sides of the inequality
x2≥323
Calculate
∣x∣≥34108
Separate the inequality into 2 possible cases
x≥34108x≤−34108
Find the union
x∈(−∞,−34108]∪[34108,+∞)
2x=23x2−23,x∈(−∞,−34108]∪[34108,+∞)
Solve the equation for x
More Steps

Evaluate
2x=23x2−23
Raise both sides of the equation to the 2-th power to eliminate the isolated 2-th root
(2x)2=(23x2−23)2
Evaluate the power
2x=49x4−123×x2+12
Cross multiply
2x×4=9x4−123×x2+12
Simplify the equation
8x=9x4−123×x2+12
Move the expression to the left side
8x−(9x4−123×x2+12)=0
If a negative sign or a subtraction symbol appears outside parentheses, remove the parentheses and change the sign of every term within the parentheses
8x−9x4+123×x2−12=0
Calculate
x≈0.635097x≈1.522509
x≈0.635097x≈1.522509,x∈(−∞,−34108]∪[34108,+∞)
Find the intersection
x≈1.522509
Check if the solution is in the defined range
x≈1.522509,x≥0
Find the intersection of the solution and the defined range
x≈1.522509
Solution
x≈1.522509
Show Solution
