3 -4х=8; В) 3х^2+4х=0. ...

general7710 @general7710

July 2022 1 8 Report

1.Упростите выражение:

А) 7ах^5·(-2а^4х);

Б) (5а^3в)^2.

2. Упростите выражение:

(2х-1)^2+(2х-1)(2х+1).

3. Разложите на множители:

А) в^2с-9с;

Б) 2а^2+12а+18;

В) х-у-2х^2+2у^2.

4. Решите уравнение:

А) 3-4(1-6х)=2(3х+4);

Б) (х+2)/3 -4х=8;

В) 3х^2+4х=0.

Answers & Comments

teledima00

Verified answer

$1.\\\\a)\;\;7ax^5\cdot (-2a^4x) = -14a^5x^6\\\\b)\;\;(5a^3b)^2 = 25a^6b^2$

$2.\\\\(2x-1)^2+(2x-1)(2x+1) = 4x^2-4x+1+4x^2 - 1 = 8x^2-4x$

$3.\\\\a)\;\; b^2c -9c = c(b^2-9) = c(b-3)(b+3)\\\\b)\;\;2a^2+12a+18 = 2(a^2 + 6a + 9) = 2(a+3)^2\\\\c)\;\; x-y-2x^2+2y^2 = (x-y) - 2(x^2-y^2) = (x-y)-2(x-y)(x+y)=\\\\ = (x-y)(1-2x-2y)$

$4.\\\\a)\;\; 3-4(1-6x) = 2(3x+4)\\\\3-4+24x = 6x+8\\\\18x = 9\\\\x = \frac{1}{2}\\\\b) \;\;\frac{x+2}{3}-4x = 8\\\\\frac{x+2}{3}-4x-8=0\\\\\frac{x+2-12x-24}{3} = 0\\\\-11x = 22\\\\x = -2\\\\c)\;\;3x^2+4x = 0\\\\x(3x+ 4) = 0\\\\x = 0\;\;\;\;x = -\frac{4}{3}$

3 votes Thanks 6

uprostit vyrazheniya 7ax5 2a4x 5a3b2

Answer

general7710 July 2022 | 0 Ответы

reshit uravnenie 3h24h0

Answer

Answers & Comments

Verified answer

uprostit vyrazheniya 7ax5 2a4x 5a3b2

reshit uravnenie 3h24h0

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