Advertisements
Advertisements
प्रश्न
Factorise the following using suitable identity
36m2 + 60m + 25
उत्तर
36m2 + 60m + 25 = 62m2 + 2 × 6m × 5 + 52
This expression is of the form of identity
a2 + 2ab + b2 = (a + b)2
(6m)2 + (2 × 6m × 5) + 52
= (6m + 5)2
36m2 + 60m + 25 = (6m + 5)(6m + 5)
APPEARS IN
संबंधित प्रश्न
Using identities, evaluate 297 × 303
Using (x + a) (x + b) = x2 + (a + b) x + ab, find 103 × 98
Use an expansion formula to find the value.
(102)2
Use the formula to find the value.
502 × 498
Expand: (51)2
(a + b)2 – 2ab = ______ + ______.
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
16x2 + 40x + 25
Factorise the following.
p2 + 14p + 13
The cost of a chocolate is Rs (x + y) and Rohit bought (x + y) chocolates. Find the total amount paid by him in terms of x. If x = 10, find the amount paid by him.
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: x2 + 4x + 4. Factorise 2x2 + 6x + 4 by using the figure.
Calculate the area of figure.
