Advertisements
Advertisements
प्रश्न
Expand `("x"-2/"x")^2`
योग
उत्तर
It is known that (a + b)2 = a2 + 2ab + b2 and (a − b)2 = a2 − 2ab + b2.
`("x"-2/"x")^2`
= `("x")^2-2xx("x")xx(2/"x")+(2/"x")^2`
= `"x"^2-4+4/"x"^2`
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
संबंधित प्रश्न
Evaluate the following, using suitable identity
9982
Square of 3x – 4y is ______.
Square of 9x – 7xy is ______.
(a – b)2 = a2 – b2
Factorise the following, using the identity a2 – 2ab + b2 = (a – b)2.
4y2 – 12y + 9
Factorise the following, using the identity a2 – 2ab + b2 = (a – b)2.
`x^2/4 - 2x + 4`
Factorise the following.
x2 – 10x + 21
Factorise the following.
x2 – 17x + 60
Factorise the following.
x2 + 4x – 77
Factorise the following.
p2 – 13p – 30
