Advertisements
Advertisements
Question
Use the formula to multiply the following.
(x + y) (x − y)
Advertisements
Solution
It is known that, (a + b) (a − b) = a2 − b2.
(x + y) (x − y)
= (x)2 − (y)2
= x2 − y2
RELATED QUESTIONS
Use a suitable identity to get the following products.
(1.1m − 0.4) (1.1 m + 0.4)
Use a suitable identity to get the following products.
(a2 + b2) (− a2 + b2)
Find the following squares by suing the identities.
`(2/3 m + 3/4 n)^2`
Use an expansion formula to find the value.
(1005)2
The difference of the squares of two consecutive numbers is their sum.
Factorise the following.
x2 + 15x + 26
The area of a circle is given by the expression πx2 + 6πx + 9π. Find the radius of the circle.
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.
If p + q = 12 and pq = 22, then find p2 + q2.
Factorise p4 + q4 + p2q2.
