Algebra
Calculus
Trigonometry
Matrix
Question
Solve the equation
x1=−645,x2=645
Alternative Form
x1≈−1.885973,x2≈1.885973
Evaluate
2(x3)2−90=0
Simplify
More Steps
Evaluate
2(x3)2−90
Multiply the exponents
2x3×2−90
Multiply the numbers
2x6−90
2x6−90=0
Move the constant to the right-hand side and change its sign
2x6=0+90
Removing 0 doesn't change the value,so remove it from the expression
2x6=90
Divide both sides
22x6=290
Divide the numbers
x6=290
Divide the numbers
More Steps
Evaluate
290
Reduce the numbers
145
Calculate
45
x6=45
Take the root of both sides of the equation and remember to use both positive and negative roots
x=±645
Separate the equation into 2 possible cases
x=645x=−645
Solution
x1=−645,x2=645
Alternative Form
x1≈−1.885973,x2≈1.885973
Show Solution
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