23
It is a quadratic equation in X.
x=4 or x=-4
3x+5=20 x=5 since 5x3+5=20
-2x+20 = 3x 20 = 3x+2x 20 = 5x 4 = x So x = 4
3x + 8 = 20 3x = 20 - 8 3x = 12 3x = 12/3 x = 4
20
3x2-9x = 0 x(3x-9) = 0 x = 0 or x = 3
3x^2+3x-60=3(x^2+x+20)=3(x+5)(x-4)
9x2 + 3x / 3x equals (3x + 1).9x2 + 3x divided by x is 9x + 3 , and then divided by 3 yields the 3x +1.
x is negative 1x is negative 2
X=-3
x2+3x = 7 x2+3x-7 = 0 Using the quadratic equation formula:- x = -4.541381265 or x = 1.541381265