(x-1,6)(1,6 + x) + 5- x² = 2,44; 2) (2-0,9x)(0,9x + 2) - 10+0,81x² = -6; 3) (x − 1,5)(1,5 + x) + (6 − x)(6 + x) = 33,7 4) (2,1- x)(x + 2,1) - (5 - x)(x + 5) = -20,59
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(x-1,6)(1,6 + x) + 5- x² = 2,44; 2) (2-0,9x)(0,9x + 2) - 10+0,81x² = -6; 3) (x − 1,5)(1,5 + x) + (6 − x)(6 + x) = 33,7 4) (2,1- x)(x + 2,1) - (5 - x)(x + 5) = -20,59