which equation can be solved by using this system of equations?\n$\begin{cases}y = 3x^{3}-7x^{2}+5\\y =…

which equation can be solved by using this system of equations?\n$\begin{cases}y = 3x^{3}-7x^{2}+5\\y = 7x^{4}+2xend{cases}$\n$3x^{3}-7x^{2}+5 = 0$\n$3x^{3}-7x^{2}+5 = 7x^{4}+2x$\n$7x^{4}+2x = 0$\n$7x^{4}+3x^{3}-7x^{2}+2x + 5 = 0$

which equation can be solved by using this system of equations?\n$\begin{cases}y = 3x^{3}-7x^{2}+5\\y = 7x^{4}+2xend{cases}$\n$3x^{3}-7x^{2}+5 = 0$\n$3x^{3}-7x^{2}+5 = 7x^{4}+2x$\n$7x^{4}+2x = 0$\n$7x^{4}+3x^{3}-7x^{2}+2x + 5 = 0$

Answer

Explanation:

Step1: Recall substitution principle

Since (y = 3x^{3}-7x^{2}+5) and (y = 7x^{4}+2x), we can set the two - expressions for (y) equal to each other.

Step2: Set the equations equal

(3x^{3}-7x^{2}+5=7x^{4}+2x)

Answer:

B. (3x^{3}-7x^{2}+5 = 7x^{4}+2x)