Question

Me ajudem!
Simplifique as expressões ​

Answer 1

Explicação passo-a-passo:

a) (2x)^2 + (10 - 3x) . (10 + 3x)

   4x^2 + (100 + 30x - 30x - 9x^2

   4x^2 + 100 - 9x^2

   -5x^2 + 100

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b) 2xy + (x - y)^2 - (x - y)^2

   2xy + (x^2 - 2xy + y^2) - (x^2 - 2xy + y^2)

   2xy + x^2 - 2xy + y^2 - x^2 + 2xy - y^2

   2xy

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c) (x - 10)^2 + 40x

   (x^2 - 20x + 100) + 40x

   x^2 - 20x + 100 + 40x

   x^2 + 20x + 100

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d) (x + 10) . (x - 10) + 75

   (x^2 - 10x + 10x - 100) + 75

   x^2 - 100 + 75

   x^2 - 25

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e) a^2 + (a + 2)^2

   a^2 + (a^2 + 4a + 4)

   a^2 + a^2 + 4a + 4

   2a^2 + 4a + 4

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f) (x + 8)^2 - 18x

  (x^2 + 16x + 64) - 18x

  x^2 + 16x + 64 - 18x

  x^2 - 2x + 64

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g) (2x + 5)^2 + 3x

   (4x^2 + 20x + 25) + 3x

   4x^2 + 20x + 25 + 3x

   4x^2 + 23x + 25