Question

Find the value of the polynomial p(x) = 6x2 – 3x + 7 at x = -1.

Answer 1

Answer:

16

Step-by-step explanation:

p(-1) = 6(-1)^2 - 3(-1) + 7

= 6 + 3 + 17

= 16

Answer 2

$\large\bold{\underline{\underline{Given:-}}}$

$p(x ) = 6 {x}^{2} - 3x + 7$

$\large\bold{\underline{\underline{To\:find:-}}}$

The value of $p(x)$ when $x=-1$.

$\large\bold{\underline{\underline{Solution:-}}}$

For $p(-1)$, just plug "$-1$" for all values of $x$.

And so we have,

$p( - 1) = 6 ({ - 1})^{2} - 3( - 1) + 7$

$= 6( - 1 \times - 1) + 3 + 7$

$= 6 \times 1 + 3 + 7$

$= 6 + 3 + 7$

$= 16$

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