Solve 30r^2 - 40r

Evaluate

30 r^{2} - 40 r

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

30 r^{2} - 40 r = 0

Factor the expression

More Steps

10 r (3 r - 4) = 0

When the product of factors equals 0,at least one factor is 0

10 r = 0 3 r - 4 = 0

Solve the equation for r

r = 0 3 r - 4 = 0

Solve the equation for r

More Steps

r = 0 r = \frac{4}{3}

Solution

r_{1} = 0, r_{2} = \frac{4}{3}

Alternative Form

r_{1} = 0, r_{2} = 1. \dot{3}

Factor the expression