Advertisements
Advertisements
प्रश्न
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
x2 + 14x + 49
योग
Advertisements
उत्तर
We have,
x2 + 14x + 49
= x2 + 2 × 7 × x + 72
= (x + 7)2
= (x + 7)(x + 7)
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.
(x + 3) (x + 3)
Using identities, evaluate 78 × 82
Use the formula to find the value.
98 × 102
Expand: (2a – 3b)2
Use a formula to multiply of (2a – 13)(2a + 13)
Expand (3m + 5)2
Factorise the following using suitable identity
y2 + 20y + 100
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
a2x2 + 2ax + 1
The area of a square is 9x2 + 24xy + 16y2. Find the side of the square.
The area of a circle is given by the expression πx2 + 6πx + 9π. Find the radius of the circle.
