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Verified answer
1)(ax - 6)(x + 3) = 2x² - 18
ax² + 3ax - 6x - 18 = 2x² - 18
ax² + (3a - 6)x - 18 = 2x² - 18
ax² = 2x²
a = 2
a-2
= 0
2)
(x -2)(x + 3)
x² + 3x - 2x - 6
x² + x - 6
koef x = 1