Mathematics, 18.03.2021 23:10, josie122

1 x2 - 10x + 21 3 4x2 + 8x + 3 = 0
5 3x2 - 3(x - 1) = 4(2x + 1) + 3
7 x² = x
9 x2 - 24 = 10x
11) (x + 2)(x - 5) + 6 = 0
13 4x2 + 11x + 6 = 0
15 6(x + 1) = 13x
19 3
12
2
19 x(4x + 5)
17 x2+x=
2(2x - 1)
3
21
5 - 4x
1

Answers: 1

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