Question

Using distributive property find 78 x 102

Answer 1

Step-by-step explanation:

78 × 102

we can write it as

(90 - 12) × (90 + 12)

as per the identity of a² - b² = (a - b) (a + b)

= 90² - 12²

= 8100 - 144

= 7956

Hope you get your answer