Advertisements
Advertisements
Question
Evaluate using the expansion of (a + b)2 or (a – b)2 :
(188)2
Advertisements
Solution
(188)2 = (200 − 12)2
= (200)2 + (12)2 − 2(200) (12)
= 40000 + 144 − 4800
= 40144 − 4800
= 35344
APPEARS IN
RELATED QUESTIONS
Find the square of x+ 3y
Find the square of 3a − 2b − 5c
Find the square of 2x − 3y + z
Evaluate using the expansion of (a + b)2 or (a – b)2 :
(415)2
Write the following numbers in standard notation.
8000000 + 70000 + 3000 + 30 + 5
Represent given values in Abacus.
3 Ten crores, 7 crores, 6 ten lakhs, 7 lakhs, 4 tens and 7 ones.
Represent given values in Abacus.
Write in standard form: 7 lakhs + 5 thousands + 4 tens + 3 ones
Find the face value and place value of the digits coloured in the given numbers.
1379
Find the face value and place value of the digits coloured in the given numbers.
2010
Circle the correct one.
| a | 5 thousand + 3 hundred + 2 ones | 5320, 5302 |
| b | The place value of 5 in 3758 | 50, 500 |
| c | Three thousand six hundred and sixty | 3060, 3660 |
| d | 4000 + 600 + 90 | 4690, 4609 |
