7 x^2 + 28 = 0...

veranikaaa @veranikaaa

June 2022 1 10 Report

Решите уравнение:
-4/7 x^2 + 28 = 0

Answers & Comments

m11m

Verified answer

-4/7 x² +28 =0
-4/7 x² = -28
x² = -28 : (-4/7)
x² = 28 * 7
4
x² = 7*7
x²=49
x₁=7
x₂= -7
Ответ: -7; 7.

60 votes Thanks 122

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