Advertisements
Advertisements
Question
Evaluate the following, using suitable identity
512
Sum
Advertisements
Solution
512 = (50 + 1)2
Taking a = 50 and b = 1 we get
(a + b)2 = a2 + 2ab + b2
(50 + 1)2 = 502 + 2(50)(1) + 12
= 2500 + 100 + 1
512 = 2601
shaalaa.com
Is there an error in this question or solution?
APPEARS IN
RELATED QUESTIONS
Use a suitable identity to get the following products.
`(3a - 1/2)(3a - 1/2)`
Use an expansion formula to find the value.
(102)2
Use the formula to find the value.
97 × 103
Expand:
(2a – 3b)2
Expand:
`("p"/3 + "q"/4)^2`
The difference of the squares of two consecutive numbers is their sum.
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
16x2 + 40x + 25
Factorise the following.
y2 + 18x + 65
The area of a square is 9x2 + 24xy + 16y2. Find the side of the square.
The area of a circle is given by the expression πx2 + 6πx + 9π. Find the radius of the circle.
