Advertisements
Advertisements
प्रश्न
Evaluate using the expansion of (a + b)2 or (a – b)2:
(9.4)2
Advertisements
उत्तर
(9.4)2 = (10 − 0.6)2 ...[10 − 0.6 = 9.4]
(a − b)2 = a2 + 2ab − b2
= (10)2 + (0.6)2 − 2 (10) (0.6)
= 100 + 0.36 − 12
= 88 + 0.36
= 88.36
APPEARS IN
संबंधित प्रश्न
Expand : (a – 2b)2
Evaluate using the expansion of (a + b)2 or (a – b)2 :
(92)2
Evaluate using the expansion of (a + b)2 or (a – b)2 :
(188)2
Write the place name and place value of digit in the following number.
35,705
The expanded form of the number is given. Write the number.
60,000 + 4000 + 600 + 70 + 9
Write the following numbers in standard notation.
200000 + 7000 + 7
Write the following numbers in expanded from.
36,01,478
Write the following numbers in expanded from.
1,45,70,004
Find the face value and place value of the digits coloured in the given numbers.
2010
Write in expanded form:
574021
