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= m⁻³.n⁻².p⁶
= p⁶/(m³.n²)
1b). ((3x⁻².y⁴)/(9x³.y²))⁻² = ((9x³.y²)/(3x⁻².y⁴))²
= (3.x³⁻⁽⁻²⁾.y²⁻⁴)²
= (3.x⁵.y⁻²)²
= 9.x¹⁰.y⁻⁴
= 9x¹⁰/y⁴
2). x^(2/3) .y² / x^(-1/4) .y^(1/4) = x^(2/3 - (1/4)) .y^(2-(1/4))
= x^(5/12) .y^(7/4)