polynomials?
回答 (3)
2008-07-16 12:16 pm
✔ 最佳答案
(2x-3)(5x+4)=0x=3/2 or -4/5QED
2008-07-16 5:11 pm
10x^2 - 7x - 12 = 0
10x^2 + 8x - 15x - 12 = 0
(10x^2 + 8x) - (15x + 12) = 0
2x(5x + 4) - 3(5x + 4) = 0
(5x + 4)(2x - 3) = 0
5x + 4 = 0
5x = -4
x = -4/5 (-0.8)
2x - 3 = 0
2x = 3
x = 3/2 (1.5)
â´ x = -4/5 (-0.8) , 3/2 (1.5)
10x^2 + 8x - 15x - 12 = 0
(10x^2 + 8x) - (15x + 12) = 0
2x(5x + 4) - 3(5x + 4) = 0
(5x + 4)(2x - 3) = 0
5x + 4 = 0
5x = -4
x = -4/5 (-0.8)
2x - 3 = 0
2x = 3
x = 3/2 (1.5)
â´ x = -4/5 (-0.8) , 3/2 (1.5)
2008-07-16 4:58 pm
10x^2 - 15x +8x -12=0
5x(2x-3)+4(2x-3)=0
(2x-3)(5x+4)=0
x = 3/2 or - 4/5
5x(2x-3)+4(2x-3)=0
(2x-3)(5x+4)=0
x = 3/2 or - 4/5
收錄日期: 2021-05-01 10:50:13
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