1.5/1 = 1.5 = 15/10
15/10 + 1/5 = 15 + 2 /10 = 17/10 = 1.7
1
{-5-x≥3x+3⇒3x+x≤-5-3⇒4x≤-8⇒x≤-2
{2x-10x≥-7-1⇒-8x≥-8⇒x≤1
x∈(-∞;-2]
2
x≠-3 U x≠2
(-3x+1)(2-x)=(3x+1)(x+3)
-6x+3x²+2-x-3x²-9x-x-3=0
-17x1
x=-1/17
N.1
(a ,во 2 степени,)+(c,во 2 степени)
X^4-7x^3+6x^2-5x-19 | <u>_x-1</u>
x^4-x^3 x^3+6x^2+12x+7
6x^3+6x^2
6x^3-6x^2
12x^2-5x
12x^2-12x
7x-19
7x-7
+26