Calculating Decimals: Problem 4

Problem: Calculate: [2007 - (8.5 × 8.5 - 1.5 × 1.5) ÷ 10] ÷ 160 - 0.3

Key: Use formulas you've learned before

a^2-b^2 = (a+b)(a-b)

VERY IMPORTANT FORMULA

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