Question

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Answer 1

а) 24x^2 + 2x -10 +5=0
24x^2+2x-5=0
D -дискриминант
D = 4+4•24•5=484
x1=(-2+22)/48=20/48=5/12
x2=(-2-22)/48=-0,5
в) 4х^2+12х+9+2х^2=-12х-х^2+4х-4
7х^2+20х+13=0
D= 400-4•7•13=36
x1= -20+6/14=1
x2= -20-6/14=-26/14=-13/7