The first one is correct (-2/3, -1/2, 7/12, 0.82) pls mark branliest
First lets distribute the 5x
5x^2 + 30x = -50
Lets divide every term by 5
x^2 + 6x = -10
To complete the square we have to half the b value, which in this case is 6. Then square it.
Half of 6 is 3, 3 squared is 9
Add that to both sides of the equation
x^2 + 6x + 9 = -1
Find the binomial squared
(x+3)^2 (If you're wondering how i got that please comment)
(x+3)^2 = -1
Take the square root of the equation of both sides
(x+3) = +/- i
x = -3 +/- i
x = -3 - i
and
x = -3 + i
Answer: 5x+4=-54 is the equation with the same value of x as 5/6*x + 2/3=-9
X+79=98 (subtract 79 to isolate x)
X=19 so it is false
