Advertisements
Advertisements
Question
Use the formula to multiply the following.
(a + 6) (a − 6)
Advertisements
Solution
It is known that, (a + b) (a − b) = a2 − b2.
(a + 6) (a − 6)
= (a)2 − (6)2
= a2 − 36
RELATED QUESTIONS
Use a suitable identity to get the following products.
(x + 3) (x + 3)
Use a suitable identity to get the following products.
(6x − 7) (6x + 7)
Find the following squares by suing the identities.
(2xy + 5y)2
Use the formula to multiply the following.
(3x − 5) (3x + 5)
Use the formula to multiply the following.
`(x/5+6)(x/5-6)`
Evaluate the following, using suitable identity
1032
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
4x4 + 12x3 + 9x2
The area of a circle is given by the expression πx2 + 6πx + 9π. Find the radius of the circle.
Factorise `x^2 + 1/x^2 + 2 - 3x - 3/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.
