Advertisements
Advertisements
प्रश्न
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
16x2 + 40x + 25
योग
Advertisements
उत्तर
We have,
16x2 + 40x + 25
= (4x)2 + 2 × 4x × 5 + 52
= (4x + 5)2
= (4x + 5)(4x + 5)
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 7: Algebraic Expression, Identities and Factorisation - Exercise [पृष्ठ २३४]
APPEARS IN
संबंधित प्रश्न
Use a suitable identity to get the following products
(2a − 7) (2a − 7)
Simplify (a2 − b2)2
Using identities, evaluate (5.2)2
Expand `("a"/2+"b"/3)^2`
Use an expansion formula to find the value.
(97)2
(a + b)2 – 2ab = ______ + ______.
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
`9x^2 + 2xy + y^2/9`
Factorise the following.
p2 + 14p + 13
The cost of a chocolate is Rs (x + y) and Rohit bought (x + y) chocolates. Find the total amount paid by him in terms of x. If x = 10, find the amount paid by him.
Verify the following:
(a + b)(a + b)(a + b) = a3 + 3a2b + 3ab2 + b3
