Advertisements
Advertisements
प्रश्न
Using identities, evaluate 9982
Advertisements
उत्तर
9982 = (1000 − 2)2
= (1000)2 − 2(1000)(2) + (2)2 [(a − b)2 = a2 − 2ab + b2 ]
= 1000000 − 4000 + 4 = 996004
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
संबंधित प्रश्न
Use a suitable identity to get the following products.
`(x/2 + (3y)/4)(x/2 + (3y)/4)`
Simplify (m2 − n2m)2 + 2m3n2
Use an expansion formula to find the value.
(997)2
Of which of the binomials given below is m2n2 + 14mnpq + 49p2q2 the expansion?
Use the formula to multiply the following.
(3x − 5) (3x + 5)
Use the formula to find the value.
54 × 46
Use the formula to find the value.
98 × 102
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
a2x3 + 2abx2 + b2x
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
`9x^2 + 2xy + y^2/9`
The area of a square is given by 4x2 + 12xy + 9y2. Find the side of the square.
