Advertisements
Advertisements
Question
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
x2 + 12x + 36
Advertisements
Solution
We have,
x2 + 12x + 36
= x2 + 2 × 6 × x + 62
= (x + 6)2 ...[∵ a2 + 2ab + b2 = (a + b)2]
= (x + 6)(x + 6)
APPEARS IN
RELATED QUESTIONS
Simplify (a2 − b2)2
Using (x + a) (x + b) = x2 + (a + b) x + ab, find 5.1 × 5.2
Use an expansion formula to find the value.
(102)2
Use the formula to find the value.
98 × 102
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
x2 + 6x + 9
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
x2 + 2x + 1
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
9x2 + 24x + 16
Factorise the following.
18 + 11x + x2
The cost of a chocolate is Rs (x + y) and Rohit bought (x + y) chocolates. Find the total amount paid by him in terms of x. If x = 10, find the amount paid by him.
Find the length of the side of the given square if area of the square is 625 square units and then find the value of x.
