Question

51 x 54 use identity​

Answer 1

Answer:

By using 4 th identity

Step-by-step explanation:

(50 + 1) (50+4)

(x+a) (x+b) = x2 +(a+b) x +ab

= 50×50+(4+1)×50+4×1

= 2500+5×50+4

= 2500+250+4

= 2754