Advertisements
Advertisements
प्रश्न
Simplify: (a + b)2 – 4ab
Advertisements
उत्तर
(a + b)2 – 4ab = a2 + b2 + 2ab – 4ab
= a2 + b2 – 2ab
= (a – b)2
APPEARS IN
संबंधित प्रश्न
Using a2 − b2 = (a + b) (a − b), find 512 − 492
Expand (5a + 6b)2
Which of the options given below is the square of the binomial `(8-1/"x")`?
Use an expansion formula to find the value.
(97)2
Evaluate the following, using suitable identity
512
Factorise the following using suitable identity
36m2 + 60m + 25
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
4x2 + 4x + 1
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
a2x2 + 2abx + b2
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
2x3 + 24x2 + 72x
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.
