X=1
(20 - x)/5
factorise (x-5)(x+4)=0 Hence x= 5 or -4
Using the quadratic equation formula: x = 8.42 or x = -1.42
If you are solving for y, it is fine. If you are solving for x, divide both sides by x and the equation should be x = y/x
5.
Solve this problem -x squared -40x- 80 =0
If x squared -10 = 0 then x = the square root of 10
(x-3)(x+2)the answer is x=3
(x-5)(x+3)
(x-3)(x-2)
Solve using the quadratic formula
'20 squared' simply means 20 multiplied by itself (20 x 20). This equals 400.
x2 - x = 20 x = 5
(x - 3)(x + 5)
X=1
X (x - 25) So X = 0 Or X = +25