Advertisements
Advertisements
प्रश्न
Using suitable identities, evaluate the following.
104 × 97
योग
उत्तर
We have,
104 × 97 = (100 + 4)(100 – 3)
= (100)2 + (4 – 3)100 + 4 × (–3) ...[Using the identity, (x + a)(x + b) = x2 + (a + b)x + ab]
= 10000 + 100 – 12
= 10088
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 7: Algebraic Expression, Identities and Factorisation - Exercise [पृष्ठ २३३]
APPEARS IN
संबंधित प्रश्न
Expand.
(a + 2) (a − 1)
Expand.
(p + 8) (p − 3)
Expand.
`(x + 1/x)(x - 1/x)`
Expand: (x + 2)(x + 3).
Expand: (y + 4)(y - 3)
Expand (2n – 1)(2n + 3)
Using the identity (x + a)(x + b) = x2 + x(a + b) + ab, find the following product
(x + 3)(x + 7)
(x + a)(x + b) = x2 + (a + b)x + ______.
The following expression is the area of a rectangle. Find the possible length and breadth of the rectangle.
x2 – 3x + 2
The following expression is the area of a rectangle. Find the possible length and breadth of the rectangle.
x2 + 19x – 20
