Jawabanmu

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2014-06-28T14:50:39+07:00
2a² - 3b
= 2(3)² -3(-2)
= 2(9) + 3(2)
= 18 + 6 = 24
2014-06-28T14:51:41+07:00
A=3 b=-2

2a²-3b
2(3²) - 3 × (-2)
= 2 × 9 --6
= 18 + 6
= 24