Question

7. 212+ 1002-5/2=7V2
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7 . 212 + 1002- 5/2 = 7V2

$1484+1002-\dfrac{5}{2} =7\sqrt{2} \\\\2486-\dfrac{5}{2} =7\sqrt{2} \\\\\dfrac{4962-5}{2}=7\sqrt{2} \\\\\dfrac{4957}{2}=7\sqrt{2}$