Question

3. Verify by substitution that
(1) the root of 3x - 5 = 7 is x = 4​

Answer 1

Answer:

p(x) = 3x - 5 = 7

g(x) = 4

p(4) = 3 X 4 - 4

p(4) = 12 - 4

p(4) = 7

p(x) = 7

p(x) = p(4)

Therefore (x - 4) is the root of p(x)

HOPE IT HELPS YOU.

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Answer 2

Answer:

3×4=12-7=5

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