112×98 short trick for this multiplication.
Answers
Answered by
0
112 × 98
= (100 + 12)(100-2)
Using formula---
( x + a ) ( x + b ) = x^2 + ( a +b )x + ab
100^2 + ( 12 - 2)100 + 12*-2
= 10000 + 1000 - 24
= 11000 - 24
= 10976 Ans..
= (100 + 12)(100-2)
Using formula---
( x + a ) ( x + b ) = x^2 + ( a +b )x + ab
100^2 + ( 12 - 2)100 + 12*-2
= 10000 + 1000 - 24
= 11000 - 24
= 10976 Ans..
shreyamadan12pb8keq:
okay but i want a short trick which i can do without writing any lengthy formula
Answered by
2
Answer:
10976
Step-by-step explanation:
112×98 [ 112 is greater than hundred by 12. 98 is smaller than 100 by 2.]
+12 -2
add 98+12 and 112-2
common answer will come = 110 [add two zeroes more 110]
∴ 11000
multiply 12×2= 24 and subtract it from 11000
answer will come 10976.
that is the answer. try it fastly it is very easy.
plz mark it as brainliest.
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