(2x-5)^2+(3x-7)(3x+7)+20x помогите ​

Question

 
(2x-5)^2+(3x-7)(3x+7)+20x
помогите ​

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Serenity 2 года 2021-09-18T10:46:40+00:00 2 Answers 0 views 0

Answers ( )

  1. Alexandra
    0
    2021-09-18T10:48:06+00:00
    Reply

    Объяснение:

    4 {x}^{2} - 20x + 25 + 9 {x}^{2} - 49 + 20x = 13 {x}^{2} - 24

  2. Hailey
    0
    2021-09-18T10:48:34+00:00
    Reply

    (2х-5)²+(3x-7)(3x+7)+20x=4x²-20x+25+9x²-49+20x=13x² – 24

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