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19 October, 16:56

Which expressions are equivalent to 25x4 - 64? Select three options.

25x4 + 40x - 40x - 64

25x4 + 13x - 13x - 64

(5x2 + 8) (5x2 - 8)

(x2 + 13) (x2 - 13)

(5x2 - 8) 2

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Answers (2)
  1. 19 October, 17:04
    0
    25x4 + 13x - 13x - 64

    25x4 + 40x - 40x - 64

    (5x2 + 8) (5x2 - 8)

    Step-by-step explanation:

    firstly, subtract 4-64 from 25x4-64 gives us 25x-60

    1. 13x-13x = 0 so they cancel out. so it is left with: 25x4-64 = 25x-60

    2. same thing. 40x-40x = 0 and 4-64 is = - 60 left with: 25x-60

    3. you add 2+8 and 2-8 which will be: (5x+10) (5x-6)

    -then you multiply 5x*5x, then again multiply 10*-6

    and it gives you 25x-60
  2. 19 October, 17:10
    0
    A B C
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