Solve for x. 8x-4=x^2+5x-15

x=3/2+ −1/2√53 or x=3/2+ 1/2√53

Step-by-step explanation:

Step-by-step explanation:

=> we try to make one side "0". I choose left side. So;

=> add -8x both side. Because left side has +8x

=> add +4 both side. Because left side has -4

Use quadratic formula :

I solved in the picture, you can look it :)

Hope this helps ^-^

step-by-step explanation:

i think something is missing in your question because y-1=(x-12) would not pass through the point (-4,-3). because if you replace x by -4 your are supposed to find y=-3 which is not the case her. if you replace x by -4 you find =-15.

i assume the right equation is y-1=1/4*(x-12) because this one is passing through both your points (if you are interested to know how i found that out i can tell you).

in this equation if i replace x by -4 i find y=-3 and if i replace x by 12, i find y=1 so the line representing this equation is passing through those 2 points.

then the standard form of the equation is finding an expression of y in function of x

y-1=1/4*(x-12)

y=x/4-3+1

y=x/4-2

hope that .

do you confirm there was a mistake in the question?