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Divide the following polynomials using laws of exponent

1. (6a⁵+60a⁴)÷ 3a²
2.(10x⁶-5x⁴)÷ 5x³
3. (27r⁵s⁴-42r²s⁵)÷3rs
4. 25xy ÷ 5x
5. 36rst÷6s

please answer thanks.​