How do you solve #x^2 + 9x = -7# graphically and algebraically?
2 Answers
Explanation:
Algebraic Solution:
This is a quadratic eqation of the form:
The quadratic formula states:
Hence,
Hence,
Graphical Solution:
To find the zeros of
graph{x^2+9x+7 [-28.87, 28.85, -14.44, 14.43]}
As can be seen, the
Hence, this is the graphical solution to the given equation.
Explanation:
Solving the equation graphically would be inefficient, since the algebraic method is required to use the graphical method. However, if you are given a graph with the exact value of the x-intercepts, the x-intercepts will be the solutions to the equation.