(x - 7) is.
(-7)^4 = (-7)x(-7)x(-7)x(-7) = (49)x(49) = 2401
49 - x2 = -(x2 -49) = - (x-7)(x+7) divide by x -7 Answer: -(x+7) = -x-7
(-2)^4 = -2 x -2 x-2 x-2 = +16 ( a minus times a minus is plus)
x4+6x3-2x-12 (x3-2)(x+6)
(x - 7) is.
49 - x2 = -(x2 -49) = - (x-7)(x+7) divide by x -7 Answer: -(x+7) = -x-7
(-7)^4 = (-7)x(-7)x(-7)x(-7) = (49)x(49) = 2401
(-2)^4 = -2 x -2 x-2 x-2 = +16 ( a minus times a minus is plus)
(x - 3)(x + 3)(x2 + 9)
x4+6x3-2x-12 (x3-2)(x+6)
This is considered an expression "x^2 - 49", or alternatively a function of the variable x. In that sense, when you apply the expression to a certain input (such as x=3) you obtain a number (3^2-49 = -40).
-24 = -2 x -2 x -2 x -2 = 16
-3(x - 3)(x + 3)(x2 + 9)
There is a formula for "the difference of squares." (x + 7)(x - 7) = 0 x = 7, -7
That factors to 5(x - 4)(x + 4)(x2 + 16)
99