Advertisements
Advertisements
प्रश्न
Use a suitable identity to get the following products.
`(3a - 1/2)(3a - 1/2)`
Advertisements
उत्तर
The product will be as follows
`(3a - 1/2)(3a - 1/2) = (3a - 1/2)^2`
`= (3a)^2 - 2(3a) (1/2) + (1/2)^2 [(a-b)^2 = a^2 - 2ab + b^2]`
= `9a^2 - 3a + 1/4`
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
APPEARS IN
संबंधित प्रश्न
Using identities, evaluate 297 × 303
Using identities, evaluate 1.05 × 9.5
Expand `("a"/2+"b"/3)^2`
Use the formula to multiply the following.
(3x − 5) (3x + 5)
Expand: `("y" - 3/"y")^2`
Use a formula to multiply of (x - 5)(x + 5).
Factorise the following expressions
x2 + 14x + 49
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
a2x2 + 2ax + 1
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
9x2 + 24x + 16
Factorise the following.
x2 + 15x + 26
