Question

52*51,Find the value using expansion formula.

Answer 1

Hey there!

52 * 51

= ( 50 + 2 ) ( 50 + 1 )

= 50² + ( 2 + 1 ) 50 + 2

= 2500 + 150 + 2

= 2652

Here, We have used simplification using identities.

( x - a) ( x - b)

= x ( x - b ) - a ( x - b)

= x² -ax -bx + ab

= x² - (a + b) x + ab.

That is, ( x - a) ( x - b) = x² - (a + b) x + ab.

Hope helped

Answer 2

BONJOUR,
❤ ❤ ❤ ❤ ❤

$52 \times 51 \\ (50 + 2)(50 +1) \\ 50(50 + 2) +1(50 + 2) \\ 2500 + 100 +50 + 2 \\ 2600 + 52 \\ 2652$