Answer:
x=4, x=-1/2
Step-by-step explanation:
https://www.symbolab.com/solver/factor-calculator/factor%202x%5E%7B2%7D%20-%207x%20-%204%20%3D%200
Answer:
See below for answers and explanations (along with a graph)
Step-by-step explanation:
X-intercepts:
2x²-7x-4=0
(2x+1)(x-4)=0
2x+1=0 and x-4=0
x=-1/2 and x=4
Axis of Symmetry:
x=-b/2a
x=-(-7)/2(2)
x=7/4
Vertex:
f(x)=2x²-7x-4
f(7/4)=2(7/4)² - 7(7/4) - 4
f(7/4)=2(49/16) - 49/4 - 4
f(7/4)=98/16 - 196/16 - 64/16
f(7/4)=-162/16
(h,k) = (7/4,-81/8)
Refer to graph to see these visually
