Answer:
Step-by-step explanation:
1.
2x^2+3x -9 = 0
Factor:
(2x-3)(x+3) = 0
x= 3/2 and x = -3
2.
2x^2+5 = -11
2x^2 = - 16
x^2 = -8
x has no value in this equation as you get imaginary values.
3.
3x^2 - 2x - 5 = 0
Factor:
(x+1)(3x-5) = 0
x = -1 and x = 5/3
4.
4x^2+6x+2 = 0
Divide by 2
2x^2 + 3x + 1 = 0
Factor
(2x + 1) (x + 1) = 0
x = -1/2 and x = -1
5.
25x^2 = -35
x has no value in this equation as you get imaginary values.
