Question

Using suitable identity, evaluate the following:
ti)998^2
(ii) (102)^2-(98)^2
(iv) 306×294

(viii) (9.7)^2 – (0.3)^2

(vii) 112.6 87.4​

Answer 1

Step-by-step explanation:

i. (1000 - 2)^2

1000^2 + 2^2 - 2 x 1000 x 2

1000000 + 4 - 4000

996004

Using (a-b)^2 = a^2 + b^2 - 2ab

ii. (100+2)^2 - (100-2)^2

100^2 + 2^2 + 2 x 100 x 2 - [ 100^2 + 2^2 - 2x100x2]

10000 + 4 + 400 - 10000 - 4 + 400

400 + 400

800

Using (a+b)^2 = a^2 + b^2 + 2ab

and (a-b)^2 = a^2 + b^2 - 2ab

iv. (300 + 6) x (300 - 6)

300^2 - 6^2

90000 - 36

89964

Using (a+b)(a-b) = a^2 - b^2

viii. (9.7)^2 - (0.3)^2

(9.7 + 0.3) x (9.7 - 0.3)

10.0 x 9.4

94

Using a^2 - b^2 = (a+b)(a-b)

Please mark it as Brainliest if it helps you

Answer 2

Answer:

Hey friend, this is your answer.

Step-by-step explanation:

The answer is attached.

Hope this helps you.

Please mark as BRAINLIST!