evaluate the following products without multiplying directly. 97×105. identity given (x+a)(x+b)=xsquare +(a+b)x+ab
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Answered by
5
97 × 105
= (100-3) × (100+5)
= 100^2 + (-3+5)100 + (-3×5)
= 10000 + 200 - 1 5
= 10185
= (100-3) × (100+5)
= 100^2 + (-3+5)100 + (-3×5)
= 10000 + 200 - 1 5
= 10185
Answered by
3
97×105 ={100+(-3)}(100+5)
=(100)^2+(-3+5)100+(-3)(5)
=10000+200-15
=10185
=(100)^2+(-3+5)100+(-3)(5)
=10000+200-15
=10185
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