Question:
(203 + 107)² - (203 - 107)² = ?
A85886
B86884
C43442
D87884
Answer:
B. 86884
Explanation:
(a)² - (b)² = (a + b)(a - b) (203 + 107)² - (203 - 107)² = (310)² - (96)² (310)² - (96)² = (310 + 96)(310 - 96) = (406)(214) = 86884
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