NCERT grade 9 chapter 2 polonimial exercise: 2.5 ,2question ( i ) 103X107 evaluate products without multipleying directly
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Step-by-step explanation:
103×107=(100+3)(100+7)
Use identity (x+a)(x+b)=x^2+(a+b)x+ab
=100^2+(3+7)100+3×7
=10000+1000+21
=1121
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