Advertisements
Advertisements
प्रश्न
Find the following squares by suing the identities.
(b − 7)2
Advertisements
उत्तर
(b − 7)2 = (b)2 − 2(b) (7) + (7)2 [(a − b)2 = a2 − 2ab + b2]
= b2 − 14b + 49
संबंधित प्रश्न
Use a suitable identity to get the following products.
(2y + 5) (2y + 5)
Using identities, evaluate 1022
Using identities, evaluate 297 × 303
Use an expansion formula to find the value.
(102)2
Expand: (10 + y)2
Use a formula to multiply of (4z – 5y)(4z + 5y)
Factors of 9x2 + 6xy are
Expand the following square, using suitable identities
(mn + 3p)2
The area of a square is 9x2 + 24xy + 16y2. Find the side of the square.
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.
