9x^2 + 2^2 = 0
3x +2 = 0
therefore: x=-2/3
(9x)2 +9x/(45x)2 +81= 9+9x/86
It can't be solved because the discriminant of the given quadratic equation is less than zero meaning it has no real roots.
It can't be factored because the discriminant of this quadratic expression is less than zero.
If you mean: x2+9x+20 then it is (x+4)(x+5) = 0 when factored
63x2+76x+21 = 0 (7x+3)(9x+7) = 0 x = -3/7 or x = -7/9
It has no solutions because the discriminant is less than zero.
(9x)2 +9x/(45x)2 +81= 9+9x/86
x = ±2
9x squared plus 16 = 0 factored is plus and minus 4/3 i.
are you sure from this equation ? x^2 + 9x + 11 ____________ = zero x + 7 or there is no zero ?? please be sure from the x^2 + 9x + 11 ???
It can't be solved because the discriminant of the given quadratic equation is less than zero meaning it has no real roots.
9x^(2) + 16 DOES NOT factor. Remember ; two squared terms with a plus(+) between them DOES NOT factor However, two squared terms with a minus(-) between them DOES factor . Hence 9x^(2) + 16 = (3x)^2) + 4^(2) does NOT factor However, 9x^(2) - 16 = (3x)^2) - 4^(2) does factor to ( (3x - 4)(3x + 4) Note the two different signs.
It can't be factored because the discriminant of this quadratic expression is less than zero.
If you mean: x2+9x+20 then it is (x+4)(x+5) = 0 when factored
(9x2 + 7)(9x2 - 7) = 81x4 - 49
63x2+76x+21 = 0 (7x+3)(9x+7) = 0 x = -3/7 or x = -7/9
(9x + 7)(x - 2)