4x3+10x2+2x+5= (2x+5)(2x2+1)
10x2 - 20xz + 15xy = 5x (2x - 4z + 3y)
10x2 + 21x - 10 = 10x2 + 25x - 4x - 10 = 5x(2x + 5) - 2(2x + 5) = (2x + 5)(5x -2)
(5x - 4)(2x + 7)
(5x - 4)(2x + 3)
4x3+10x2+2x+5= (2x+5)(2x2+1)
5x -2x = 3
10x2
10x2 - 20xz + 15xy = 5x (2x - 4z + 3y)
5x(2x - 3)
10x2 + 21x - 10 = 10x2 + 25x - 4x - 10 = 5x(2x + 5) - 2(2x + 5) = (2x + 5)(5x -2)
-2x(x + 3)(x + 2)
(2x + 1)(5x - 6)
(5x - 4)(2x + 7)
5
(5x - 4)(2x + 3)
If: 10x2-64 = 36+6x2 Then: 4x2-100 = 0 And: (2x-10)(2x+10) = 0 So: x = 5 or x = -5