10x^2 + 11x - 6 = 0

cứu emmmm :<<<
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11) 10x² + 11x - 6=0
13) x² - 6x + 9 = 0
15) (2x²+3)(-x+ 7) = 0
17) (2x - 3)(x-5)+(3-2x)(3x-4)=0
19) (1-x)(5x+3) = (3x-7)(x - 1)
12) x²-3x² - 28 = 0
14)(x+2)(x-3) = 0
16) (x²-2)(x+5)(-3x+8)= 0
18) (4x-1)(x-3) = (x-3)(5x+2)
20) (2x - 3)² = (3-2x)(2 - 5x)