Advertisements
Advertisements
प्रश्न
Factorise the following.
x2 + 4x – 77
योग
Advertisements
उत्तर
We have,
x2 + 4x – 77
= x2 + (11 – 7)x – 77
= x2 + 11x – 7x – 77
= x(x + 11) – 7(x + 11)
= (x + 11)(x – 7)
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 `("x"-2/"x")^2`
Expand: (5x - 4)2
Expand (5p – 1)2
Factorise the following expressions
y2 – 10y + 25
Evaluate the following, using suitable identity
9982
Square of 9x – 7xy is ______.
Factorise the following, using the identity a2 – 2ab + b2 = (a – b)2.
y2 – 14y + 49
Factorise the following, using the identity a2 – 2ab + b2 = (a – b)2.
a2y3 – 2aby2 + b2y
Factorise the following.
y2 – 2y – 15
Verify the following:
(a – b)(a – b)(a – b) = a3 – 3a2b + 3ab2 – b3
