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(2x - 3)(2x + 3) = 0
2x - 3 = 0 ===> x = 3/2
2x + 3 = 0 ===> x = -3/2
7) 3x² - 5x = 0 ===> x (3x - 5) = 0
x = 0
3x - 5 = 0 ===> x = 5/3
8) 2x² + 3x - 9 = 0 ===> (2x - 3)(x + 3) = 0
2x - 3 = 0 ===> x = 3/2
x + 3 = 0 ===> x = -3
9) 5 - 3x - 2x² = 0 ===> (5 + 2x)(1 - x) = 0
5 + 2x = 0 ===> x = -5/2
1 - x = 0 ===> x = 1
10) 4 + x - 3x² = 0 ===> (4 - 3x)(1 + x) = 0
4 - 3x = 0 ===> x = 4/3
1 + x = 0 ===> x = -1
semoga jelas dan membantu ya