Advertisements
Advertisements
प्रश्न
Factorise the following.
x2 + 9x + 20
योग
Advertisements
उत्तर
We have,
x2 + 9x + 20
= x2 + 5x + 4x + 5 × 4
= x(x + 5) + 4(x + 5)
= (x + 5)(x + 4)
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
Use a suitable identity to get the following products.
(2y + 5) (2y + 5)
Use a suitable identity to get the following products.
(− a + c) (− a + c)
Find the following squares by suing the identities.
`(2/3 m + 3/4 n)^2`
Using identities, evaluate 9982
Use an expansion formula to find the value.
(997)2
Use the formula to multiply the following.
`(x/5+6)(x/5-6)`
Expand: (51)2
Factorise the following expressions
x2 + 14x + 49
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
a2x2 + 2ax + 1
Factorise the following.
18 + 11x + x2
