<span>1) 3(х-2)-5х=4
3x-6-5x = 4
2x = -10
x = -5
2) </span><span>6х-4(х+1)=8
6x -4x - 4 = 8
2x = 12
x = 6
3) </span><span>2х+(х-6)=3
2x + x - 6 = 3
3x = 9
x = 3</span>
В8=в1*q^7=3
b6*b7*b8*b9*b10=
b*q^5*b*q^6*b*q^7*b*q^8*b*q^9=
(b*q^7) ^5=3^5=243
Х^2 - 64 <= 0
х^2 <= 64.
х <= +- 8
ответ 2.
1. (0,3а-1,2b)+(a-b)-(1,3a-0,2b) = 0,3а-1,2b+a-b-1,3a+0,2b = -2b
2. (11p³-2p²)-(p³-p²)+(-5p²-3p³) = 11p³-2p²-p³+p²-5p²-3p³= 7p³-6p²
3. (5x²+6x³)+(x³-x²)-(-2x³+4x²) = 5x²+6x³+x³-x²+2x³-4x²=9x³
4. (-2x³+xy²)+(x²y-1)+(x²y-xy²-3x³) = -2x³+xy²+x²y-1+x²y-xy²-3x³ = -5x³+2x²y-1
5.(3x²+5xy+7x²y)-(5xy+3x²)-(7x²y-3x²) = 3x²+5xy+7x²y-5xy-3x²-7x²y+3x² = 3x²
6. (8a²-10ab-b²)+(-6a²+2ab-b²)-(a²-8ab+4b²) = 8a²-10ab-b²-6a²+2ab-b²-a²+8ab-4b² = a²-6b²