Advertisements
Advertisements
प्रश्न
Factorise the following.
y2 + 18x + 65
बेरीज
उत्तर
We have,
y2 + 18y + 65 = y2 + 13y + 5y + 5 × 13
= y(y + 13) + 5(y + 13)
= (y + 13)(y + 5)
shaalaa.com
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 7: Algebraic Expression, Identities and Factorisation - Exercise [पृष्ठ २३५]
APPEARS IN
संबंधित प्रश्न
Use a suitable identity to get the following products.
`(3a - 1/2)(3a - 1/2)`
Simplify (a2 − b2)2
Simplify (2x +5)2 − (2x − 5)2
Using identities, evaluate 297 × 303
Using a2 − b2 = (a + b) (a − b), find 1532 − 1472
Using (x + a) (x + b) = x2 + (a + b) x + ab, find 103 × 104
Expand (ax + by)2
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
x2 + 6x + 9
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
a2x2 + 2abx + b2
Verify the following:
(a + b)(a + b)(a + b) = a3 + 3a2b + 3ab2 + b3