Advertisements
Advertisements
प्रश्न
Expand `("a"-1/"a")^2`
योग
उत्तर
It is known that, (a + b)2 = a2 + 2ab + b2 and (a − b)2 = a2 − 2ab + b2.
`("a"-1/"a")^2`
= `("a")^2-2xx("a")xx(1/"a")+(1/"a")^2`
= `"a"^2-2+1/"a"^2`
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
संबंधित प्रश्न
Expand: (5x - 4)2
Factorise the following expressions
y2 – 10y + 25
(a – 1)2 = a2 – 1
Simplify: (a + b)2 – (a – b)2
A square lawn has a 2 m wide path surrounding it. If the area of the path is 136 m2, find the area of lawn
(a – b)2 + ______ = a2 – b2
Factorise the following, using the identity a2 – 2ab + b2 = (a – b)2.
x2 – 8x + 16
Factorise the following, using the identity a2 – 2ab + b2 = (a – b)2.
p2 – 2p + 1
Factorise the following, using the identity a2 – 2ab + b2 = (a – b)2.
a2y2 – 2aby + b2
Factorise the following.
x2 – 17x + 60
