If 32y + 6(3y) = 27. Find y

Assessment: JAMB UTME - Mathematics - 1985 Subject: General Mathematics

Question 1 Report

If 32y + 6(3y) = 27. Find y
Answer Details
32y + 6(3y) = 27
This can be rewritten as (3y)2 + 6(3y) = 27
Let 3y = x
x2 + 6x - 27 = 0
(x + 9)(x - 3) = 0
when x - 3 = 0, x = 3
sub. for x in 3y = x
3y = 3
log33 = y
y = 1

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