Advertisements
Advertisements
प्रश्न
Factorise the following.
y2 – 2y – 15
योग
Advertisements
उत्तर
We have,
y2 – 2y – 15
= y2 + (3 – 5)y – 15
= y2 + 3y – 5y – 15
= y(y + 3) – 5(y + 3)
= (y + 3)(y – 5)
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 7: Algebraic Expression, Identities and Factorisation - Exercise [पृष्ठ २३५]
APPEARS IN
संबंधित प्रश्न
Expand: (5x - 4)2
Factorise the following expressions
y2 – 10y + 25
Evaluate the following, using suitable identity
9982
Using identity, find the value of (4.9)2
(a – b)2 + ______ = a2 – b2
Factorised form of 4y2 – 12y + 9 is ______.
1032 – 1022 = ______ × (103 – 102) = ______.
Factorise the following, using the identity a2 – 2ab + b2 = (a – b)2.
p2 – 2p + 1
Factorise the following.
y2 + 4y – 21
Factorise the following.
x2 – 10x + 21
