Разделите обе части уравнения на первый коэффициент и решите, выделив полный квадрат. 1) 2x² +7x+3=0; 2) 4x² -9x+2=0; 3) 2x²-3x+1=0; 4) 6x²

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Разделите обе части уравнения на первый коэффициент и решите, выделив полный квадрат. 1) 2x² +7x+3=0; 2) 4x² -9x+2=0; 3) 2x²-3x+1=0; 4) 6x² -11x+5=0.

срочно пожалуйста!

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firqqkz

Ответ:

1)2x^2-7x+3=0 D=b^2-4ac=49-4*2*3=49-24=25, x=7+5 /4=3 , x=7-5 /4=1/2 x2=(7-5)/4=1/2

x1=(7+5)/4x2=(7-5)/4=1/2

firqqkz 4x^2 + 9x + 2 = 0

D = 81 - 32 = 49

x1= (-9+7): (2*4) = - 0,25

X2 = (-9-7):8 = -2

firqqkz это на второе задание

where Choose the correct conjunctive word. Jack hoped to see his friend... he had known for a long time. C) whom A)

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where Choose the correct conjunctive word. Jack hoped to see his friend... he had known for a long time. C) whom A)

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