08.09.2021թ: Պարապմունք 2: Դասարանում

Թերի քառակուսային հավասարում

1) x² — 4x = 0 | x ∙ (x — 4) = 0
2) x² — 5x = 0 | x ∙ (x — 5) = 0
3) 2x² — 3x = 0 | x ∙ (2x — 3) = 0
4) 4×2 — 6x = 0 | x ∙ (4x — 6) = 0

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1) x² — 4x = 0
x ∙ (x — 4) = 0
x = 0
x — 4 = 0

2) x ∙ (x — 2) = 0
x — 2 = 0
x = 2

3) x ∙ y = 0
x = 0
y = 0

4) x² — 6x = 0
x ∙ (x — 6) = 0
x = 0
x — 6 = 0
x = 6

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1) x² — 8x = 0
x ∙ (x — 8) = 0
x = 0
x — 8 = 0
x = 8

2) x² — 16x = 0
x ∙ (x — 16) = 0
x = 0
x — 16 = 0
x = 16

3) 2x² — 5x = 0
x ∙ (2x — 5) = 0
x = 0
2x — 5 = 0
2x = 5 ∙ 2 = 2,5

4) 7x² — 10x = 0
x ∙ (7x — 10) = 0
x = 0
7x — 10 = 0
7x = 10 : 7 = 1,3