Question

check weather -3 is a solution of equation 3x^3+5x+2

Answer 1

Hope it helps you..

Answer 2

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$\underline\bold{\huge{solution!!}}$

To check whether -3 is solution of given equation or not put the value of -3 in place of "x".

$3 {x}^{2} + 5x + 2 \\ \\ = 3 ({ - 3})^{3} + 5( - 3) + 2 \\ \\ = 3 \times -27- 15 + 2 \\ \\ = -81 - 13 \\ \\ = -94$
Since, the result is not equal to 0 .

Therefore, -3 is not zero of equation.