Advertisements
Advertisements
प्रश्न
Use the formula to multiply the following.
(x + y) (x − y)
योग
Advertisements
उत्तर
It is known that, (a + b) (a − b) = a2 − b2.
(x + y) (x − y)
= (x)2 − (y)2
= x2 − y2
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
संबंधित प्रश्न
Simplify (ab + bc)2 − 2ab2c
Using identities, evaluate (5.2)2
Expand:
(2a – 3b)2
Use a formula to multiply of (x − 5)(x + 5).
Evaluate the following, using suitable identity
512
(a + b)2 = a2 + b2
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
16x2 + 40x + 25
Factorise the following.
x2 + 9x + 20
If a + b = 25 and a2 + b2 = 225, then find ab.
Verify the following:
(7p – 13q)2 + 364pq = (7p + 13q)2
