Advertisements
Advertisements
प्रश्न
Use a suitable identity to get the following products.
(x + 3) (x + 3)
Advertisements
उत्तर
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
संबंधित प्रश्न
Using a2 − b2 = (a + b) (a − b), find 1532 − 1472
Using a2 − b2 = (a + b) (a − b), find 12.12 − 7.92
Use the formula to multiply the following.
(x + y) (x − y)
Use the formula to find the value.
98 × 102
Use a formula to multiply of (x - 5)(x + 5).
Expand the following square, using suitable identities
(2x + 5)2
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
x2 + 12x + 36
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
x2 + 14x + 49
The area of a rectangle is x2 + 7x + 12. If its breadth is (x + 3), then find its length.
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.
