pricedaniel2007 pricedaniel2007

18-02-2022
Mathematics

contestada

Solve for x.

x2−9=55
Question 1 options:

±32

±8

±46−−√

±4

Respuesta :

lefamosima lefamosima

20-02-2022

Answer:

x²-9=55

Like terms

x²=55+9

x²=64

x²-64=0

factorise

(X-8)(X+8)=0

X=8 or X =-8.

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