4. Using expansion of (a + b) or (a – b) find the value of the following. (i) (98)² (ii) (104)² (iii) (7.8)² (iv) (

Question

4. Using expansion of (a + b) or (a – b) find the
value of the following.
(i) (98)²
(ii) (104)²
(iii) (7.8)²
(iv) (30.1)²
(v) (403)²
(vi) (9.5)²​

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Mackenzie 2 weeks 2021-09-11T06:02:13+00:00 2 Answers 0 views 0

Answers ( )

    0
    2021-09-11T06:03:18+00:00

    (100-2)2

    10000+4-400

    9604

    (100+4)2

    10000+16+800

    10816

    (80/10-2/10)2

    6400/100+4/100+1600/100

    8004/100

    80.04q

    (300/10+1/10)2

    90000/100+1/100+600/100

    90601/100

    906.01

    (400+3)2

    1600+9+2400

    4009

    (100/10-5/10)2

    10000/100+25/100+1000/100

    11025/100

    110.25

    0
    2021-09-11T06:04:10+00:00

    Answer:

    I think so…

    Step-by-step explanation:

    1 ) (100-2)^2 = 9604

    2) (100 + 4)^2 = 10816

    3) ( 10- 2.2 )^2 = 60.84

    4) (30 + 0.1)^2 = 906.01

    5) (400 + 3)^2 = 162409

    6) ( 10 – 0 .5 )^2 = 90.25

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