Question

simplify a(3a²-5a+2) and find the value of a=-1​

Answer 1

Answer:

-10

Step-by-step explanation:

3a^3- 5a^2+2a.

3(-1)^3- 5(-1) +2(-1)

3(-1) - (-5) +(-2)

-3 -5-2

-10

Answer 2

Answer :-

=> - 10

__________________________

Equation :-

$a(3 {a}^{2} - 5a + 2)$

__________________________

Given :-

A = ( -1 )

__________________________

To Find :-

To find the value of $a(3 {a}^{2} - 5a + 2)$

If a = ( -1 )

__________________________

Concept :-

To solve such type of questions first we have to solve the equation and then we have to place the value of variables.

So Let's Do it !!

__________________________

Step By Step Solution :-

• First we will solve the equation.

$= > a(3 {a}^{2} - 5a + 2) \\ \\ = > a \times 3 {a}^{2} - a \times 5a + a \times 2 \\ \\ = > 3 {a}^{3} - 5 {a}^{2} + 2a$

• Now we will put the value of A = ( -1 )

$= > 3 {a}^{3} - 5 {a}^{2} + 2a \\ \\ = > 3 \times { (- 1)}^{3} - 5 \times {( - 1)}^{2} + 2 \times ( - 1) \\ \\ = > 3 \times ( - 1) - 5 \times 1 - 2 \\ \\ = > - 3 - 5 - 2 \\ \\ = > - 10$

Therefore the answer = - 10

__________________________