Question

. Find the values of the following by using proper identity.
(1)27 x 32
(2) (5.5)²​

Answer 1

Answer:

1) 27 x 33

= ( 30-3) (30 +3)

= 30^² - 3^2

= 900-9

= 891

2) 5.5^2

= (5+0.5)^2

= 5^2 + 0.5^2 + 2x5x0.5

= 25 + 0.25 + 5

= 30.25

Answer 2

Answer:

I) 896

Step-by-step explanation:

(30+2)×(30-2). (a+b)(a-b)

30^2 - 2^2. a^2 - b^2

900-4

896