Question

find the value of polynomial 5x2 -3x +7 at x=2 ​

Answer 1

Answer:

21 is the answer.

Step-by-step explanation:

Given polynomial, 5x² - 3x + 7

Substitute x = 2,

= 5(2)² - 3(2) + 7

= 5(4) - 6 + 7

= 20 - 6 + 7

= 14 + 7

= 21

Answer 2

Answer:

the value of the polynomial 5x² - 3x + 7 at x = 2 is 21.

Step-by-step explanation:

Given:

polynomial 5x² - 3x + 7.

and, x = 2.

To Find :

The value of Polynomial.

Solution:

We must have replace the specified value for x in the polynomial and carry out the arithmetic operations to determine the value of the polynomial at that value of x.

The polynomial in this case is 5x² - 3x + 7, and we must determine its value when x = 2.

Hence, we change x in the polynomial to 2:

$= 5(2)^2 - 3(2) + 7$

$= 20 - 6 + 7$

$= 21$

Therefore, the value of the polynomial 5x² - 3x + 7 at x = 2 is 21.

To Summarize:

• Replace x in the polynomial with the given value.
• Do the arithmetic operations to simplify the statement.
• The polynomial's value at the specified value of x is the outcome.

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