Как разложить на множители трехчлен
a) 14x^2 - 3x -2
b) 3x^2 + x - 2
c) 4x^2 - 5x + 1
d) 3x^2 + 7x +4
a) 14x^2 - 3x -2
b) 3x^2 + x - 2
c) 4x^2 - 5x + 1
d) 3x^2 + 7x +4
More Questions From This User See All
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Объяснение:
a) 14x^2 - 3x - 2 = 14x^2 - 7x + 4x - 2 = 7x(2x - 1)+2(2x - 1) = (7x+2)(2x-1)
б) 3x^2 + x - 2 = 3x^2 + 3x - 2x - 2 = 3x(x + 1)-2(x+1) = (3x - 2)(x + 1)
c) 4x^2 - 5x + 1 = 4x^2 - 4x - x + 1 = 4x(x-1)-1(x-1) = (4x - 1)(x - 1)
d) 3x^2 + 7x + 4 = 3x^2 + 3x + 4x + 4 = 3x(x+1)+4(x+1) = (3x + 4)(x + 1)