Advertisements
Advertisements
Question
Use a suitable identity to get the following products.
(x + 3) (x + 3)
Advertisements
Solution
The product will be as follows
(x + 3) (x + 3) = (x + 3)2
= (x)2 + 2(x) (3) + (3)2 [(a + b)2 = a2 + 2ab + b2]
= x2 + 6x + 9
RELATED QUESTIONS
Find the following squares by suing the identities.
`(2/3 m + 3/4 n)^2`
Using a2 − b2 = (a + b) (a − b), find (1.02)2 − (0.98)2
Using (x + a) (x + b) = x2 + (a + b) x + ab, find 103 × 104
Use the formula to find the value.
54 × 46
Expand the following square, using suitable identities
(mn + 3p)2
If a + b = 10 and ab = 18, find the value of a2 + b2
If a + b = 5 and a2 + b2 = 13, then ab = ?
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
4x2 + 4x + 1
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.
