1)
x²+3x-88 =
= x²+11x - 8x - 88 =
= (x²+11x) - (8x + 88) =
= x·(x+11) - 8·(x + 11) =
= (x+11)·(x -8)
2)
2x² - 3x + 1 =
= 2x²- 2x - x + 1 =
= (2x²- 2x) - (x - 1) =
= 2x·(x- 1) - 1·(x - 1) =
= (x- 1)·(2x - 1)
3)
3x² + 11x - 14 =
= 3x² + 14x - 3x - 14 =
= (3x² - 3x)+ (14x - 14) =
= 3x·(x - 1)+ 14·(x - 1) =
= (x - 1)·(3x + 14)
а)
(3a+c)×2a разделить 2а через скобки
6a^2+2ac
б)
(8х-у)×3ху
24x^2y-3xy^2
в)
(2а+3)×4а
8a^2+12a
г)
(3х-у)×2ху
6x^3y-2x^2y^2