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7.84 ร 7.84-2-16x2-167.84-2 16รท0.5 |
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Answer» Let a = 7.84, b = 2.16 Then,(a^2 - b^2)/(a - b) ÷ 0.5= (a + b)(a - b)/(a - b) ÷ 0.5= (a + b) ÷ 0.5= (7.84 + 2.16) ÷ 0.5= 10 ÷ 0.5= 100/5 = 20 |
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