maridani398 maridani398

11-06-2020
Mathematics

contestada

Hi!! I need some help with those exercises can anybody help me please !! Thanks you

Hi I need some help with those exercises can anybody help me please Thanks you class=

Respuesta :

tatiklisek tatiklisek

11-06-2020

Answer:

Step-by-step explanation:

(a+b)^2=a^(2)+2ab+b^(2)

(a-b)^2=a^(2)-2ab+b^(2)

13)

(x+2)^(2)-(x-1)^2

x^(2)+4x+4-(x^(2)-2x+1)

x^(2)+4x+4-x^(2)+2x-1

6x+3

15)

(x+5)^(2)-(x+1)^2

x^(2)+10x+25-(x^(2)+2x+1)

x^(2)+10x+25-x^(2)-2x-1

8x+24

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