Advertisements
Advertisements
प्रश्न
Find the following squares by suing the identities
(0.4p − 0.5q)2
Advertisements
उत्तर
(0.4p − 0.5q)2 = (0.4p)2 − 2 (0.4p) (0.5q) + (0.5q)2
[(a − b)2 = a2 − 2ab + b2]
= 0.16p2 − 0.4pq + 0.25q2
संबंधित प्रश्न
Simplify (4m + 5n)2 + (5m + 4n)2
Use a formula to multiply of (4z – 5y)(4z + 5y)
(x2 + y2)(y2 + x2) = (x2 + y2)2
Show that (x + 2y)2 – (x – 2y)2 = 8xy
(a + b)2 – 2ab = ______ + ______.
(a + b)2 = a2 + b2
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
x2 + 12x + 36
If p + q = 12 and pq = 22, then find p2 + q2.
Verify the following:
(7p – 13q)2 + 364pq = (7p + 13q)2
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.
