Zadanie 2. Б, В, г Zadanie 3 Pojaluistaaaaaa. Created by Humanitarian20. algebra-ru

Zadanie 2. Б, В, г Zadanie 3 Pojaluistaaaaaa...

September 2021 1 18 Report

Zadanie 2. Б, В, г
Zadanie 3
Pojaluistaaaaaa

Answers & Comments

m11m 2.
б) = 2y(2y-1)-4y² -(2y-1) = 4y²-2y-4y²-2y+1 = 1-4y
2y-1 2y-1 2y-1

в) = 5a²   - b   =   25a² -b² = (5a-b)(5a+b) = 5a+b
b(5a-b) 5(5a-b) 5b(5a-b) 5b(5a-b) 5b

г) = x² + 1 = x² - 1 = 2x² -x(x+1)   =
x(x²-1) 2(1-x) x(x-1)(x+1) 2(1-x) 2x(x-1)(x+1)
=   2x²-x²-x =    x² -x    =   x(x-1) = 1 = 1
2x(x-1)(x+1) 2x(x-1)(x+1) 2x(x-1)(x+1) 2(x+1) 2x+2

4.
=   4(a+1)    + a - 1 =
(a-2)(a²+2a+4) a²+2a+4 a-2
= 4a+4+a(a-2)-(a²+2a+4)= 4a+4+a²-2a-a²-2a-4 = 0 = 0
(a-2)(a²+2a+4) a³ -8     a³-8

2 votes Thanks 1

Humanitarian20 Спасибо огромное !!!

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