Розв'яжіть графічно систему рівнянь, до ть будь ласка​

1 x 2 17 x 2 ± 4x + 3 33 x 2 ± 7x + 12 2 x 2 – 1 18 x 2 ± 4x + 4 34 x 2 ± 8x 3 x 2 – 4 19 x 2 ± 4x – 5 35 x 2 ± 8x + 7 4 x 2 –9 20 x 2 ± 4x – 12 36 x 2 ± 8x – 9 5 x 2 ± x 21 x 2 ± 5x 37 x 2 ± 8x + 12 6 x 2 ± x – 2 22 x 2 ± 5x + 4 38 x 2 ± 9x 7 x 2 ± x – 6 23 x 2 ± 5x ± 6 39 x 2 ± 9x + 8 8 x 2 ± x – 12 24 x 2 ± 6x 40 x 2 ± 9x – 10 9 x 2 ± 2x 25 x 2 ± 6x + 5 41 x 2 ± 10x 10 x 2 ± 2x + 1 26 x 2 ± 6x – 7 42 x 2 ± 10x + 9 11 x 2 ± 2x – 3 27 x 2 ± 6x + 8 43 x 2 ± 10x – 11 12 x 2 ± 2x – 8 28 x 2 ± 6x + 9 44 x 2 ± 11x 13 x 2 ± 3x 29 x 2 ± 7x 45 x 2 ± 11x + 10 14 x 2 ± 3x – 4 30 x 2 ± 7x + 6 46 x 2 ± 11x – 12 15 x 2 ± 3x – 10 31 x 2 ± 7x – 8 47 x 2 ± 12x 16 x 2 ± 4x 32 x 2 ± 7x + 10 48 x 2 ± 12x + 11 

В решении.

Объяснение:

1)

а) х² + 3х⁴ = х²(1 + 3х²);

б) 3а² - 27 = 3(а² - 9) = 3(а - 3)(а + 3);

в) 2х + 4 + х² + 2х = х² + 4х + 4 = (х + 2)² = (х + 2)(х + 2).

2) х² - 3х = 0

х(х - 3) = 0

х₁ = 0;

х - 3 = 0

х₂ = 3.

3) 3abc⁸/a³bc² = 3c⁶/a².

4) 2ab - (a + b)² + 2a² =

= 2ab - (a² + 2ab + b²) + 2a² =

= 2ab - a² - 2ab - b² + 2a² =

= a² - b² =

= (a - b)(a + b);

(a - b)(a + b) = (a - b)(a + b), доказано.

5) х³ + 3х² - 9х - 27 = 0

(х³ + 3х²) - (9х + 27) =

= х²(х + 3) - 9(х + 3) =

= (х + 3)(х² - 9) =

= (х + 3)(х - 3)(х + 3) = 0

х + 3 = 0

х₁ = -3;

х - 3 = 0

х₂ = 3;