Calculate the value of the expression (0.9 × 0.9 − 0.8 × 0.8) divided by 1.7.
Explanation
The numerator is a difference of squares: (0.9)² − (0.8)² = (0.9 + 0.8)(0.9 − 0.8). This equals 1.7 × 0.1 = 0.17. Dividing by 1.7 gives 0.17 ÷ 1.7 = 0.1.
The numerator is a difference of squares: (0.9)² − (0.8)² = (0.9 + 0.8)(0.9 − 0.8). This equals 1.7 × 0.1 = 0.17. Dividing by 1.7 gives 0.17 ÷ 1.7 = 0.1.