Question

Evaluate using identities 53 x 56

Answer 1

2968

Explanation:

Answer 2

2968

Explanation:

53×56=(50+3)(50+6) This is in the form;

(x+a)(x+b)=
`x^(2)` + (a+b)x + ab

Here x=50,a=3,b=6

(50+3)(50+6)=
`50^(2)` + (3+6)50 + 3×6

= 2500 + (9)50 + 18

= 2500 + 450 + 18

= 2968