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Can anyone plz help me with this question.... no spam

Answer»

According to exponent laws

A × A = A^2

therefore y^4 × y = y^5

= y^5/y^-2

according to exponent laws

a/a = a^1-1 = a^0 = 1

therefore y^5/y^-2 = y^5-(-2) = y^5+2

= simplest FORM is y^7

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