Solve b^2-2b=15 - ScanMath

Evaluate

b^{2} - 2 b = 15

Move the expression to the left side

b^{2} - 2 b - 15 = 0

Factor the expression

More Steps

(b - 5) (b + 3) = 0

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

b - 5 = 0 b + 3 = 0

Solve the equation for b

More Steps

b = 5 b + 3 = 0

Solve the equation for b

More Steps

b = 5 b = - 3

Solution

b_{1} = - 3, b_{2} = 5

Solve the quadratic equation