Question

If x =(-2),then find the value of the following : I) 3x² + 5x .please help ​

Answer 1

Step-by-step explanation:

The value of 5x

2

–3x+2 when x=2 is calculated as below,

5x

2

–3x+2=5∗(2)

2

–3∗(2)+2

On simplification, we get

=5∗4–3∗2+2

=20–6+2

=22–6

=16.

Hence, the value of 5x

2

–3x+2=5 when x=2 is 16.

Answer 2

Answer:

2

Step-by-step explanation:

value of x is -2

then insert the the -2 in the x

3($x^{2}$)+5x

3(-2squared)+5(-2)

12+-10

=2