Advertisements
Advertisements
प्रश्न
Verify the following:
(7p – 13q)2 + 364pq = (7p + 13q)2
बेरीज
उत्तर
Taking L.H.S. = (7p – 13q)2 + 364pq
= (7p)2 + (13q)2 – 2 × 7p × 13q + 364q
= (7p)2 + (13q)2 – 182pq + 364pq
= (7p)2 + (13q)2 + 182pq
= (7p)2 + (13q)2 + 2 × 7p × 13q
= (7p + 13q)2
= R.H.S.
Hence verified.
shaalaa.com
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 7: Algebraic Expression, Identities and Factorisation - Exercise [पृष्ठ २३८]
APPEARS IN
संबंधित प्रश्न
Use a suitable identity to get the following products.
`(3a - 1/2)(3a - 1/2)`
Using identities, evaluate 1.05 × 9.5
Using a2 − b2 = (a + b) (a − b), find 1532 − 1472
Expand (ax + by)2
Use an expansion formula to find the value.
(997)2
Use the formula to multiply the following.
(a + 6) (a − 6)
Use the formula to find the value.
54 × 46
Use a formula to multiply of (x - 5)(x + 5).
Factorise the following.
y2 + 18x + 65
If a + b = 25 and a2 + b2 = 225, then find ab.
