adiosseeya adiosseeya
  • 07-06-2021
  • Mathematics
contestada

The solution of the equation (x+3) squared=7 is

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nathenianasyachristi
nathenianasyachristi nathenianasyachristi
  • 07-06-2021

Answer:

( x+3 )² = 7

expand ( x+3 )² : x²+6x+9

x²+6x+9=7

x²+6x+2=0

use a scientific calculator casio mode setup click no 5 , then click 3 input the equation

a = 1

b = 6

c = 2

answer : x = -3+square root 7 or x = -3-square root 7

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