Here's the question you clicked on:
marcfranzblau
Solve. (2x^2) - 8x -14 = 0 1) x= 4± 3 √2 2) x= 2± 2 √7 3) x= 4± √3 4) x= 2 ± √11
judging by the answers I guess you could use the quadratic equation.
wait.. ha ha.. divide the whole thing by 2
and it'll be x^2 - 4x -7
so could you tell me which is the best possible answer? i have no clue
The one that is the correct answer. :p
you have to use the quadratic formula... what you have is... x^2 - 4x -7 and the quadratic formula is...
ax^2 + bx + c is the form we have... (1)x^2 - 4x -7 where a =1 b = (-4) c = (-7)
plug a,b, and c into the quadratic equation to solve for the roots of x.. these are the points on the graph where this function crosses the x axis...
im trying i suck at this
You cant just help out a pal? one question ):
i got 4±√44 / 2 so far