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4 September, 21:04

Expand and simplify the following

expressions.

(a) (a - 2) 2

+5
Answers (2)
  1. 5 September, 00:00
    0
    2a-4 is the answer you're looking for
  2. 5 September, 00:50
    0
    Answer:0

    Step-by-step explanation: Calculation:

    (

    a

    -

    2

    )

    2

    =

    0

    a

    2

    -

    4

    a

    +

    4

    =

    0

    p

    =

    1

    ;

    q

    =

    -

    4

    ;

    r

    =

    4

    D

    =

    q

    2

    -

    4

    p

    r

    =

    4

    2

    -

    4



    1



    4

    =

    0

    D

    =

    0

    a

    1

    ,

    2

    =

    -

    q

    ±

    D

    2

    p

    =

    4

    ±

    0

    2

    =

    2

    ±

    0

    a

    1

    ,

    2

    =

    2

    ±

    0

    a

    1

    =

    a

    2

    =

    2

    Factored form of the equation:

    (

    a

    -

    2

    )

    (

    a

    -

    2

    )

    =

    0

    (a-2)

    2

    =0

    a

    2

    -4a+4=0

    p=1; q=-4; r=4

    D=q

    2

    -4pr=4

    2

    -4⋅1⋅4=0

    D=0

    a

    1,2



    =

    2p

    -q±

    D





    =

    2



    0





    =2±

    0



    a

    1,2



    =2±0

    a

    1



    =a

    2



    =2

    Factored form of the equation:

    (a-2) (a-2) = 0
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