Question

Find the expansion of (45+4) (45+34) using suitable identity.​

Answer 1

Answer:

$\\\;\underbrace{\underline{\sf{use\:identity\;lV}}}$

give:-

use the suitable identify

use the identity (lV)

= (x+a) (x+b) = x²+(a+b)x+ ab

let's find by using identity.

= (45+4) (45+34)= 45²+(4+34)(45) + (4)(34)

= 45²+(4+34)(45)+(4)(34)= 2025+1710+136

= 2025+1710+136

=3971