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14 April, 18:18

Complete the table below to solve the equation $2x + 12 = 4^x$

$x$ / $f (x) = 2x+12$ / $g (x) = 4^x$

-2 / /

-1 / /

0 / /

1 / /

2 / /

A x=0

B x=1

C x=2

D x=16

+2
Answers (1)
  1. 14 April, 18:45
    0
    2 (2) + 12 = 4^ (2)

    4 + 12 = 16

    16 = 16

    only x = 2 will have f (x) = g (x) so x = 2 is answer
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