Which of the following equations is a cubic equation?
A) $2 x ^ { 3 } - 2 x ^ { 2 } - 5 = 0$
B) $40 x ^ { 2 } - 5 x ^ { 4 } + 2 x ^ { 3 } = 0$
C) $5 - x = 0$
D) $40 x ^ { 2 } - 5 x = 2$

Question

Quizplus · Accepted Answer

A cubic equation is an equation of the form ax^3 + bx^2 + cx + d = 0 where a, b, c, and d are constants and a is not equal to 0. Option A is the only equation that fits this form, therefore it is the only cubic equation among the options.

Which of the Following Equations Is a Cubic Equation? A) 2x3−2x2−5=02 x ^ { 3 } - 2 x ^ { 2 } - 5 = 02x3−2x2−5=0

Which of the Following Equations Is a Cubic Equation?
A) $2 x ^ { 3 } - 2 x ^ { 2 } - 5 = 0$