Question

Evaluate by using suitable identities:
(i) 1.05 x 9.5
(ii) 9982
(iii) 103 x 98​

Answer 1

Answer:

1.05×9.5

1.05 × 0.95 × 10

(1 + 0.05)× (1− 0.05) × 10

[(1)²  − (0.05)²] × 10

 [1 − 0.0025] × 10

 0.9975 × 10

9.975

second is in the attachment

103×98

=(100+3)(100−2)

=10000−200+300−6

=10300−206

=10094.

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

1) 1.05× 9.5

=(1.05)×(10-0.5)

=1.05 (10)- 1.05 (0.5)

=10.5-0.525

=9.975

2)9982=(10000-18)

3)103×98

=103×(100-2)

=103 (100)-103 (2)

=10300-206

=10094