Advertisements
Advertisements
प्रश्न
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
`9x^2 + 2xy + y^2/9`
योग
Advertisements
उत्तर
We have,
`9x^2 + 2xy + y^2/9`
= `(3x)^2 + 2 xx 3x xx y/3 + (y/3)^2`
= `(3x + y/3)^2`
= `(3x + y/3)(3x + y/3)`
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
Using identities, evaluate 712
Using identities, evaluate 78 × 82
Using (x + a) (x + b) = x2 + (a + b) x + ab, find 9.7 × 9.8
Expand `("a"/2+"b"/3)^2`
Expand `("x"+1/2)^2`
Use an expansion formula to find the value.
(1005)2
Expand (3m + 5)2
If a + b = 10 and ab = 18, find the value of a2 + b2
Simplify: (a + b)2 + (a – b)2
The height of a triangle is x4 + y4 and its base is 14xy. Find the area of the triangle.
