Question

3. Using suitable identity, find the value of :

(ii) 54 X 49

Answer 1

(50+4)(50-1)

by using(x+a)(x+b)=x^2+(a+b)x+ab

Here,a=4andb=-1

(50+4)(50-1)=(50)^2+(4-1)×50+4×-1

=2500+150+(-4)

=2650-4

=2644

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Answer 2

Answer:

2646

Step-by-step explanation:

(x+a) (x-b)= x² +(a - b) x - ab

(50+4) (50-1) = 50² + (4 - 1) 50 - 4 × 1

= 2500 + 150 - 4

= 2650 - 4

= 2646