The graphical method of solving the equation x3 + 3x2 + 4x - 28 = 0 is by drawing the graphs of the curves
A
y = x3 and y = 3x2 + x - 28
B
y = x3 + 3x2 + 4x + 4 and the line y = \(\frac{28}{x}\)
C
y = x3 + 3x2 + 4x and y
D
y = x2 + 3x + 4 and y = \(\frac{28}{x}\)
E
y = x2 + 3x + 4 and line y = 28x
Verified Correct Answer: D.
Step-by-Step Mathematical Solution
The graphical method of solving the equation x3 + 3x2 + 4x - 28 = 0 is by drawing the graphs of the curves
y = x2 + 3x + 4 and y = \(\frac{28}{x}\)`.
Source: Myschool Past Questions Archive (Record #32487)