Question

find the value of the polynomial 4x^2-5x+3 where x= -1​

Answer 1

Answer:

Here's your answer

Step-by-step explanation:

Given => x = -1

              p(x) = 4x^2 - 5x + 3

              p(-1) = 4(-1)^2 - 5(-1) + 3

                      = 4 + 5 + 3         (since -1^2 = 1)

                      = 12

Hope you understand.

Answer 2

Answer:

The value of the given polynomial = 12

Step-by-step explanation:

Let P(x) = 4x² - 5x + 3

at x = - 1

• P (- 1) = 4 × - 1² - 5 × - 1 + 3

- 1² ( Square of - 1 ) means - 1 multiplied by - 1 and we know that minus ( - ) and minus ( - ) results in plus ( + ), we get:

• P (- 1) = 4 × 1 - 5 × - 1 + 3

First multipy by the given terms , we get:

• P (- 1) = 4 - ( - 5 ) + 3
• P (- 1) = 4 + 5 + 3

After that do addition of 4 and 3 i.e, sum of 4 and 3, we get:

• P (- 1) = 7 + 5

Finally, add 7 and 5

• P (- 1) = 12

∴ The value of the given polynomial = 12

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