225h2- 1 is a special case known as the difference of two squares.225h2= (15h)2and 1 = 12, so this expression is equal to (15h)2-(
1)2.
This factorises very neatly into two sets of brackets: (15h+1)(15h-1).
(15h + 1)(15h - 1)
(2x - 1)(4x + 1)
It is (A-1)(A+1) when factored
1, -1, 5, -5
(x + 1)(x - 8)
(x - 1)(x + 1)
(2x - 1)(2x + 1)
(x-3)(3x+1)
(t + 1)(2t - 3)
The factors are -1(2x + 1)(3x + 4)
(7a - 1)(6a + 1)
(2x - 1)(4x2 + 2x + 1)