Solve 2{left(3/5right)}^2-1

$$2 { \left( \frac{ 3 }{ 5 } \right) }^{ 2 } -1$$

Evaluate

$$-\frac{7}{25}=-0.28$$

Solution Steps

Calculate \frac{3}{5} to the power of 2 and get \frac{9}{25}.

$$2\times \frac{9}{25}-1$$

Express 2\times \frac{9}{25} as a single fraction.

$$\frac{2\times 9}{25}-1$$

Multiply 2 and 9 to get 18.

$$\frac{18}{25}-1$$

Convert 1 to fraction \frac{25}{25}.

$$\frac{18}{25}-\frac{25}{25}$$

Since \frac{18}{25} and \frac{25}{25} have the same denominator, subtract them by subtracting their numerators.

$$\frac{18-25}{25}$$

Subtract 25 from 18 to get -7.

$$-\frac{7}{25}$$

Factor

$$-\frac{7}{25} = -0.28$$