9. Using (x + a) (x + b) = x2 + (a + b) x + ab, find
a. 55 x 52
b. 103 x 108
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Answer:
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Answered by
2
Answer:
a) Ans- 2860
b) Ans- 11124
Step-by-step explanation:
a) 55 x 52
= (x + a) (x + b)
= (50 + 5) (50 + 2)
= (50)² + (5 + 2) x 50 + 5 x 2
= 2500 + 350 + 10
= 2850 + 10
= 2860
b) 103 x 108
= (x + a) (x + b)
= (100 + 3) (100 + 8)
= (100)² + (3 + 8) x 100 + 3 x 8
= 10000 + 1100 + 24
= 11100 + 24
= 11124
YOU CAN ALSO CHECK IT BY YOURSELF IF YOU THINKS THAT HERE IS SOME MISTAKE
HOPE IT HELPS
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