Using suitable identities find 12.5×11.5
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143.75
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Answered by
1
Answer:
143.75
Step-by-step explanation:
12.5×11.5
= (12+0.5)×(12-0.5)
= (12)²-(0.5)²...........using identity a²-b²=(a+b)×(a-b)
= 144-0.25
= 143.75
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