1) x-2 x+3 = x+2 x-4 2) 8y-5 9y = y y+2 3) x^2+3 = 2 x^2+1 4) 3 1 = x^2+2 x 15 5)x+2= 4x+1 6) x^2-5 7x+10 = x-1 9
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Ответы на вопрос:
1) x-2 x+3 = x+2 x-4x^2-6x+8=x^2+6+5x 2=11x x=2/112) 8y-5 9y = y y+28y^2-10+11y=9y^2 y^2-11y+10=0 y1=10 y2=13) x^2+3 = 2 x^2+1x^2+3=2x^2+2 x^2=1 x=1 x=-14) 3 1 = x^2+2 x3x=2+x^2 x^2-3x+2=0 x=2 x=1 155)x+2= 4x+14x^2+2+9x=15 4x^2+9x-13=0 x=1 x2=-13/46) x^2-5 7x+10 = x-1 9 9x^2-45=7x^2-10+3x 2x^2-3x-35=0 x=5 x=-7/2
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