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@Пиштет
June 2022
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Помогите!!! Разложить на множитель. 2 примера пожалуйста!!!!!
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DJToxa
Verified answer
1) 2x^2 - 3x-20=0
D=9+160=169=13^2
x1=(3+13)/2=8
x2=(3-13)/2=-5
2x^2 - 3x - 20 = 2 * (x - 8) * (x +5)
2)3x^2 - x - 4 =0
D=1+48=49=7^2
x1=(1+7)/3 =8/3 = 2 2/3
x2 = (1-7)/ 3= -2
3x^2 - x - 4 = 3 * (x - 2 2/3) * (x + 2)
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Answers & Comments
Verified answer
1) 2x^2 - 3x-20=0D=9+160=169=13^2
x1=(3+13)/2=8
x2=(3-13)/2=-5
2x^2 - 3x - 20 = 2 * (x - 8) * (x +5)
2)3x^2 - x - 4 =0
D=1+48=49=7^2
x1=(1+7)/3 =8/3 = 2 2/3
x2 = (1-7)/ 3= -2
3x^2 - x - 4 = 3 * (x - 2 2/3) * (x + 2)