Solve the equation by graphing:x^2+7x+19=0
a.x=49
b.no solution
c.x=19
x=12

Question

Solve the equation by graphing:x^2+7x+19=0
a.x=49
b.no solution
c.x=19
x=12

anonymous · Answer

y=x^2+7x+19 <-- graph that equation

The solutions are where  x=0 AKA where the line intersects the x axis

anonymous · Answer

You can find the solution by factoring or using the quadratic formula $$x = -b \pm \sqrt{b ^{2}-4ac}$$ all over 2a

anonymous · Answer

I cant see wher it crosses 0 on my calculator

anonymous · Answer

try this with the quad formula:
-7 +- √7^2 - 4(1)(19)  /2

anonymous · Answer

7^2 = 49
4(1)(19) = 76
49 - 76 = -27
you cant have a negative under the radical so there are NO SOLUTIONS!

Hope I helped!!

anonymous · Answer

By the way what I did above was the radical part of the formula...just by knowing that it is a negative will let you know that there are no solutions for the equation. 

Trust your calculator on solutions:) it was right, the equation doesnt cross the axis

anonymous · Answer

so the answer is B right @jazy @timo86m