Question
Simplify the expression
−x8−3
Evaluate
−(x4)2−3
Multiply the exponents
−x4×2−3
Solution
−x8−3
Show Solution

Find the roots
x1=−28204+1442−28204−1442i,x2=28204+1442+28204−1442i
Alternative Form
x1≈−1.059877−0.439015i,x2≈1.059877+0.439015i
Evaluate
−(x4)2−3
To find the roots of the expression,set the expression equal to 0
−(x4)2−3=0
Evaluate the power
More Steps

Evaluate
(x4)2
Transform the expression
x4×2
Multiply the numbers
x8
−x8−3=0
Move the constant to the right-hand side and change its sign
−x8=0+3
Removing 0 doesn't change the value,so remove it from the expression
−x8=3
Change the signs on both sides of the equation
x8=−3
Take the root of both sides of the equation and remember to use both positive and negative roots
x=±8−3
Simplify the expression
More Steps

Evaluate
8−3
Rewrite the expression
83×22+2+22−2i
Apply the distributive property
83×22+2+83×22−2i
Multiply the numbers
More Steps

Evaluate
83×22+2
Multiply the numbers
283×2+2
Multiply the numbers
28204+1442
28204+1442+83×22−2i
Multiply the numbers
28204+1442+28204−1442i
x=±28204+1442+28204−1442i
Separate the equation into 2 possible cases
x=28204+1442+28204−1442ix=−28204+1442−28204−1442i
Solution
x1=−28204+1442−28204−1442i,x2=28204+1442+28204−1442i
Alternative Form
x1≈−1.059877−0.439015i,x2≈1.059877+0.439015i
Show Solution
