Y = - 5x
----------------------------------
Вот пожалуйста вам Ваш график
(a+b)²= a² +2ab + b²
(a-b)²= a² -2ab + b²
(a+b)(a-b) = a² - b²
(a+b)³ = a³ + 3a²b + 3ab² + b³
( a - b)³ = a³ - 3a²b + 3ab² - b³
a³ + b³ = (a+b)(a² -ab + b²)
a³ - b³ = (a -b)(a² +ab + b²)
1)12 - 6x² = ( 2x + 3)( 5 - 3x)
12 - 6x² = 10x - 6x² + 15 - 9x
- 6x² + 6x² - x = - 12 + 15
- x = 3
x = - 3
2) ( x + 7)( x - 8) - ( x - 9)( x+ 10) = 0
x² - x - 56 - ( x² + x - 90) = 0
x² - x - 56 - x² - x + 90= 0
- 2x = - 34
2x = 34
x = 17
4*(2-x)+13x = -10
8-4x+13x = -10
9x = -10-8 = -18
x = -18/9
x = -2