Question
Simplify the expression
−1−7200u
Evaluate
i5×i5−7200u
Evaluate the power
More Steps

Evaluate
i5
Evaluate
i4+1
Calculate
11×i
Calculate
i
i×i5−7200u
Evaluate the power
More Steps

Evaluate
i5
Evaluate
i4+1
Calculate
11×i
Calculate
i
i×i−7200u
Solution
More Steps

Evaluate
i×i
Multiply
i2
Use i2=−1 to transform the expression
1×(−1)
Calculate
−1
−1−7200u
Show Solution

Find the roots
u=−72001
Alternative Form
u=−0.000138˙
Evaluate
i5×i5−7200u
To find the roots of the expression,set the expression equal to 0
i5×i5−7200u=0
Evaluate the power
More Steps

Evaluate
i5
Evaluate
i4+1
Calculate
11×i
Calculate
i
i×i5−7200u=0
Evaluate the power
More Steps

Evaluate
i5
Evaluate
i4+1
Calculate
11×i
Calculate
i
i×i−7200u=0
Multiply the numbers
More Steps

Evaluate
i×i
Multiply
i2
Use i2=−1 to transform the expression
1×(−1)
Calculate
−1
−1−7200u=0
Move the constant to the right-hand side and change its sign
−7200u=0+1
Removing 0 doesn't change the value,so remove it from the expression
−7200u=1
Change the signs on both sides of the equation
7200u=−1
Divide both sides
72007200u=7200−1
Divide the numbers
u=7200−1
Solution
u=−72001
Alternative Form
u=−0.000138˙
Show Solution
