SOLUTION: I need help answering this word problem. If the sides of a square are lengthened by 7cm, the area becomes 196cm^2. Find the length of a side of the original square. I also nee

Question 327570: I need help answering this word problem. If the sides of a square are lengthened by 7cm, the area becomes 196cm^2. Find the length of a side of the original square.
I also need help with another problem. Find the vertex, the line symmetry, the max or minium value & graph. f(x)=1over5 (fraction)(x+2)^2+2
If you could help me, that would be really appreciated.
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Let the side of the square equal s.

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The equation is in vertex form, where (h,k) is the vertex.
Comparing,
Vertex : (,)
The vertex lies on the axis of symmetry, .
The coefficient of term is positive so the parabola opens upwards and the value at the vertex is the minimum of the function.

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