4, -5
Solve this problem -x squared -40x- 80 =0
Let x = the number x^2 + x = x x^2 = 0 x = 0
x * x - 9 = 0 PEMDAS = Multiplication first. What multiplied it self equals nine? 3. So x = 3
y equals x plus 4 when y equals 0 then x equals 2i i is the square root of negative 1
x squared -2x-3 equals 0 is the same as (x + 1)(x - 3) = 0
If x squared -10 = 0 then x = the square root of 10
4, -5
x = -1 OR x = 3
True because in both equations x = 0 or x = -4
(x-3)(x-5) = 0
(x-3)(x-9) = 0
(x+4)(x-5) = 0
(x, y) = (-3, -3) or (3, 3)
Solve this problem -x squared -40x- 80 =0
Yes it is and well done.
If you mean: x2+9x+20 then it is (x+4)(x+5) = 0 when factored