Solve e^39-r^21 - ScanMath

Evaluate

e^{3} \times 9 - r^{2} \times 1

To find the roots of the expression,set the expression equal to 0

e^{3} \times 9 - r^{2} \times 1 = 0

Multiply the numbers

9 e^{3} - r^{2} \times 1 = 0

Any expression multiplied by 1 remains the same

9 e^{3} - r^{2} = 0

Move the constant to the right-hand side and change its sign

- r^{2} = 0 - 9 e^{3}

Removing 0 doesn't change the value,so remove it from the expression

- r^{2} = - 9 e^{3}

Change the signs on both sides of the equation

r^{2} = 9 e^{3}

Take the root of both sides of the equation and remember to use both positive and negative roots

r = \pm 9 e^{3}

Simplify the expression

More Steps

r = \pm 3 e e

Separate the equation into 2 possible cases

r = 3 e e r = - 3 e e

Solution

r_{1} = - 3 e e, r_{2} = 3 e e

Alternative Form

r_{1} \approx - 13.445067, r_{2} \approx 13.445067

Simplify the expression