Advertisements
Advertisements
Question
Use the formula to multiply the following.
(x + y) (x − y)
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.
(x + 3) (x + 3)
Use a suitable identity to get the following products.
(2y + 5) (2y + 5)
Which of the options given below is the square of the binomial `(8-1/"x")`?
Use an expansion formula to find the value.
(102)2
Using identity, find the value of (100.1)2
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.
`9x^2 + 2xy + y^2/9`
Factorise the following.
y2 + 18x + 65
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.
Take suitable number of cards given in the adjoining diagram [G(x × x) representing x2, R(x × 1) representing x and Y(1 × 1) representing 1] to factorise the following expressions, by arranging the cards in the form of rectangles:
- 2x2 + 6x + 4
- x2 + 4x + 4.
Factorise 2x2 + 6x + 4 by using the figure.
Calculate the area of figure.
