Question

Select the two values of x that are roots of this equation.

3x - 5 = -2x2
O A. x= 1
O B. x=-
x= -2
NIU
O C. x= 2
D. x= -1
3
Help please

Answer 1

x = 1 or -5/2

Explanation:

-2x^2 - 3x + 5 = 0

multiply all through by -1

2x^2 + 3x - 5 = 0

....... 2x^2 × 5 = 10x^2 = +5x × -2x

(2x^2 + 5x)-(2x - 5) = 0

x(2x + 5) - 1(2x + 5) = 0

x - 1 = 0 or 2x + 5 = 0

x = 1 or 2x = - 5

x = 1 or -5/2