Question

27*32,Find the value using expansion formula.

Answer 1

BONJOUR,
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$27 \times 32 \\ = (30 - 3)(30 + 2) \\ 30(30 + 2) - 3(30 + 2) \\ 900 + 60 - 90 - 6 \\ 960 - 96 \\ = 864$
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Answer 2

Hey there!

27 * 32

= ( 30 - 3 ) ( 30 + 2 )

= 30² + ( 2 - 3 )30 - 2 × 3

= 900 -30-6

= 864 .

Here, We have used distributive property or simplification using identities.

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

Hope helped