Advertisements
Advertisements
प्रश्न
Evaluate using the expansion of (a + b)2 or (a – b)2:
(9.4)2
योग
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
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
APPEARS IN
संबंधित प्रश्न
Find the square of `2"x"+1/"x"+1`
Find the square of `5-x+2/x`
Evaluate using the expansion of (a + b)2 or (a – b)2 :
(20.7)2
Find the square of 607
Find the square of 9.7
The expanded form of the number is given. Write the number.
60,000 + 4000 + 600 + 70 + 9
Represent given values in Abacus.
3 Ten crores, 7 crores, 6 ten lakhs, 7 lakhs, 4 tens and 7 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.
4038
Write in expanded form:
8907010
