Question 332105
{{{ (a^7/-7b^4)^6 }}}
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Any number when raised to even power becomes s positive number. (-7)^6=(7^6)
{{{(((a^(7))^(6))) / ((-7)^(6)*(b^(4))^(6))}}}
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{{{(a^(7*6))/(7^(6)*(b^(6*4)))}}} 
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{{{(a^(42))/(7^(6)*b^(24))}}}