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6 August, 14:57

Which value for x makes the open sentence true?

7 + 6 • x = 4^2 + x^2

a) 5

b) 4

c) 3

d) 2

+5
Answers (1)
  1. 6 August, 16:27
    0
    The answer is: c) 3

    7 + 6 x 3 = 4^2 + 3^2

    7 + 6 x 3 = 7 + 18 = 25

    4^2 + 3^2 = 16 + 9 = 25
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