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प्रश्न
Subtract the second expression from the first:
10abc, 2a2 + 2abc - 4b2
उत्तर
10abc - (2a2 + 2abc - 4b2 )
= 10 abc - 2a2 - 2abc + 4b2
= 10 abc - 2 abc - 2a2 + 4b2
= 8abc - 2a2 + 4b2
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