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प्रश्न
If a = − 10, evaluate:
a2 + 8a
बेरीज
उत्तर
a2 + 8a
= (a × a) + (8 × a)
= (− 10 × (− 10)) + (8 × (− 10))
= 100 + (− 80)
= 100 − 80
= 20
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