Ответы на вопрос:
1.7(1.6²-0.4²) / 3.4(8.7²-1.3²) =
(1.6-0.4)(1.6+0.4) / 2(8.7-1.3)(8.7+1.3)=
1.2*2 / 2*7.4*10 =
0.6 / 3.7*10 = 0.6/37 = 6/370 = 3/185
A) x=0 y=-4; y=0 x²-3x-4=0 x1= 4 x2= -1 b) x=0 y=10; y=0 -2x²-8x+10=0 2x²+8x-10=0 x²+4x-5=0 x1= -5 x2= 1
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