Question

Evaluate 38x42 without multiplying directly​

Answer 1

Answer:

1596

Step-by-step explanation:

38=40-2

42=40+2

38×42= (40-2)(40+2) { (a-b)(a+b) }=a²-b²

=40²-2²

= 1600-4=1596

Answer 2

Answer:

here is your answer...hope it heps uu:)