Advertisements
Advertisements
प्रश्न
Use an expansion formula to find the value.
(97)2
Advertisements
उत्तर
It is known that (a + b)2 = a2 + 2ab + b2 and (a − b)2 = a2 − 2ab + b2
(97)2
= (100 − 3)2
= (100)2 − 2 × 100 × 3 + (3)2
= 10000 − 600 + 9
= 9409
संबंधित प्रश्न
Use a suitable identity to get the following products.
(1.1m − 0.4) (1.1 m + 0.4)
Use a suitable identity to get the following products.
(6x − 7) (6x + 7)
Using a2 − b2 = (a + b) (a − b), find 12.12 − 7.92
Expand `("a"/2+"b"/3)^2`
Expand: `("p"/3 + "q"/4)^2`
Use a formula to multiply of (x - 5)(x + 5).
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.
9x2 + 30x + 25
Factorise the following.
x2 + 15x + 26
Find the length of the side of the given square if area of the square is 625 square units and then find the value of x.
