scoobylicioua7 scoobylicioua7

24-07-2018
Mathematics

contestada

What number must you add to complete the square
x^2-20x=17

Respuesta :

25-07-2018

[tex](*)\ (a-b)^2=a^2-2ab+b^2[/tex]

[tex]x^2-20x=17\\\\x^2-2\cdot x\cdot10=17\ \ \ |+10^2\\\\\underbrace{x^2-2\cdot x\cdot10+10^2}_{(*)}=17+10^2\\\\(x-10)^2=117[/tex]

Answer: 10² = 100

Answer Link

slamphear slamphear

12-11-2020

Answer:

100

Step-by-step explanation:

10^2=100

Answer Link

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