The result of simplifying the square of a / A-3 + 9 / 9 divided by a / A + 3 is ---

The result of simplifying the square of a / A-3 + 9 / 9 divided by a / A + 3 is ---

The square of a / A-3 + 9 / 9 divided by a / A + 3
=a/(a-3)+9/9²÷a/(a+3)
=a/(a-3)+(a+3)/9a
=(9a²+(a+3)(a-3))/9a(a-3)
=(10a²-9)/9a(a-3);
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Calculation 2 √ 75-3 √ 27 + √ 12 + √ 72 + √ 18 - & # 189; √ 32

Original formula = 2 × 5 √ 3-3 × 3 √ 3 + 2 √ 3 + 6 √ 2 + 3 √ 2-1 / 2 × 4 √ 2
=10√3-9√3+2√3+6√2+3√2-2√2
=3√3+7√2

Calculation √ 27 - √ 8 - √ 12 + √ 32

√27 - √8 -√12 + √32
=3 radical 3-2 radical 2-2 radical 3 + 4 radical 2
=Radical 3 + 2 radical 2