Using suitabe identity evaluate 107 X 103
OR
Expand the following using suitable identity (4a - 2b - 3c)^2
Answers
Answered by
1
Answer:
12121
Step-by-step explanation:
107×103
= 100+7 , 100+3
identity = (x+a)(x+b)= x²+(a+b)x+ab
= (100)²+(7+3)×100+(7×3)
= 10000+ 2100+21
=12121
Answered by
1
Step-by-step explanation:
107 × 103
= (100+7) (100+3)
by applying identity (x+a) (x+b)= x^2 + x(a+b)+ab
put x=100,a=7,b=3
100^2+100(7+3)+7×3
=10000+100×10+21
=10000+1000+21
=11021
hope this will helpful.
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