Advertisements
Advertisements
Question
Evaluate using the expansion of (a + b)2 or (a – b)2 :
(92)2
Advertisements
Solution
(92)2 = (100 − 8)2
= (100)2 + (8)2 − 2(100) (8)
= 10000 + 64 − 1600
= 10064 − 1600
= 8464
APPEARS IN
RELATED QUESTIONS
Find the square of `"a"+1/(5"a")`
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 :
(188)2
Evaluate using the expansion of (a + b)2 or (a – b)2 :
(20.7)2
Write the place name and place value of digit in the following number.
82,74,508
Write the place value of the underlined digit.
89,99,988
The expanded form of the number is given. Write the number.
9,00,000 + 20,000 + 7000 + 800 + 5
The expanded form of the number is given. Write the number.
20,00,000 + 3,00,000 + 60,000 + 9000 + 500 + 10 + 7
The expanded form of the number is given. Write the number.
80,00,000 + 50,000 + 1000 + 600 + 9
Find the face value and place value of the digits coloured in the given numbers.
9876
