Advertisements
Advertisements
प्रश्न
Use the formula to find the value.
97 × 103
Advertisements
उत्तर
It is known that, (a + b) (a − b) = a2 − b2.
97 × 103
= (100 − 3) × (100 + 3)
= (100)2 − (3)2
= 10000 − 9
= 9991
संबंधित प्रश्न
Find the following squares by suing the identities.
(b − 7)2
Find the following squares by suing the identities
(0.4p − 0.5q)2
Expand `("a"/2+"b"/3)^2`
Simplify: (a + b)2 + (a – b)2
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
x2 + 2x + 1
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
a2x2 + 2abxy + b2y2
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
a2x3 + 2abx2 + b2x
The area of a circle is given by the expression πx2 + 6πx + 9π. Find the radius of the circle.
If p + q = 12 and pq = 22, then find p2 + q2.
Factorise p4 + q4 + p2q2.
