Advertisements
Advertisements
Question
Evaluate using the expansion of (a + b)2 or (a – b)2 :
(415)2
Solution
(415)2 = (400 + 15)2
= (400)2 + (15)2 + 2(400)(15)
= 160000 + 225 + 12000
= 172225
APPEARS IN
RELATED QUESTIONS
Expand : (2a + b)2
Find the square of x − 2y +1
Evaluate using the expansion of (a + b)2 or (a – b)2 :
(208)2
Evaluate using the expansion of (a + b)2 or (a – b)2 :
(20.7)2
Write the place value of the underlined digit.
50,000
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.
8965
Find the face value and place value of the digits coloured in the given numbers.
2010
Find the face value and place value of the digits coloured in the given numbers.
4038
