Question

do it correct and with whole expression and explanation no unessery ans​

Answer 1

Answer:

answer is (-2a^3 - a - 2)

Step-by-step explanation:

$let \: the \: term \: to \: be \: added \: in \: {3a}^{3} - {2a}^{2} + 5a + 1 \: be \: x \\ {3a}^{3} - {2a}^{2} + 5a + 1 + x = {a}^{3} - {2a}^{2} + 4a - 1 \\ x ={a}^{3} - {2a}^{2} + 4a - 1 - ({3a}^{3} - {2a}^{2} + 5a + 1) \\ = {a}^{3} - {2a}^{2} + 4a - 1 - {3a}^{3} + {2a}^{2} - 5a - 1 \\ = { - 2a}^{3} - a - 2$