The graphical method of solving the equation x3 + 3x2 + 4x - 28 =...

Mathematics

JAMB 1982

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

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Correct Answer: Option D

Explanation

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 = \(\frac{28}{x}\)`.

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The graphical method of solving the equation x3 + 3x2 + 4x - 28 =...

Correct Answer: Option D

Explanation

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