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Exponents with Like Bases

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Question

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30 × (−23) + 30 × 14 = ?

(a) −270
(b) 270
(c) 1110
(d) −1110

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Solution

(a) −270
30 × (−23) + 30 × 14
= 30 × (−23 + 14) [Associative property]
= 30 × (−9)
= −270

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