224.

ա) (x — 1)(x — 2) = 0 => [x — 1 = 0 => [x = 1
………………………………[x — 2 = 0…….[x = 2

Պատ.՝ 1; 2:

բ) (x — 3)(x + 4) = 0 => [x — 3 = 0 => [x = 3
………………………………[x + 4 = 0……[x = -4

Պատ.՝ 3; -4:

գ) (x — 7)² = 0

(x — 7)(x — 7) => x — 7 = 0 => x = 7

Պատ.՝ 7:

դ) (x + 4)(x — 6) = 0 => [x + 4 = 0 = > [x = -4
………………………………[x — 6 = 0……..[x = 6

Պատ.՝ -4; 6:

ե) x(x — 2) = 0 => [x = 0 = > [x = 0
………………………[x — 2 = 0…[x = 2

Պատ.՝ 0; 2:

զ) (x + 3)x = 0 => [x + 3 = 0 = > [x = -3
………………………..[x = 0………….[x = 0

Պատ.՝ -3; 0:

է) 3x² = 0 => x² = 0 => x = 0

Պատ.՝ 0:

ը) -x²(3 + x) = 0 => [-x² = 0 = > [x = 0
………………………….[3 + x = 0….[x = -3

Պատ.՝ 0; -3:

225.

ա) 2x² — 3x = 0
x(2x — 3) = 0 => [x = 0……..=> [x = 0 => [x = 0
…………………….[2x — 3 = 0……[2x = 3…..[x = 3/2

Պատ.՝ 0; 3/2:

բ) 7x² + 5x = 0
x(7x + 5) = 0 => [x = 0……..=> [x = 0 => [x = 0
……………………..[7x + 5 = 0……[7x = -5…[x = -5/7

Պատ.՝ 0; -5/7:

գ) x² + x³ = 0
x²(1 + x) = 0 => [x² = 0……..=> [x² = 0 => [x = 0
…………………….[1 + x = 0………[x = -1…..[x = -1

Պատ.՝ 0; -1:

դ) 1 — x³ = 0 => x³ = -1 => x = -1

Պատ.՝ -1: