Question

Find the value of polynomial p=3z^2 - 4z + 5, when z=2​

Answer 1

Answer:

$\large{\underline{\boxed{\sf 9}}}$

Step-by-step explanation:

Given polynomial ;

3z² - 4z + 5

For z = 2, we have

$\implies \text{p(x)} =3 \text z^{2} - 4 \text z + 5 \\ \\ \implies \text{p(x)} =3(2) {}^{2} - 4(2) + 5 \\ \\ \implies \text{p(x)} =3 \times 4 - 8 + 5 \\ \\ \implies \text{p(x)} =12 - 8 + 5 \\ \\\implies \text{p(x)} =17 - 8 \\ \\ \implies \text{p(x)} =9$

Hence, the answer is 9.

_______________________

$\large{\underline{\underline{\mathfrak{\heartsuit \: Extra \: Information: \: \heartsuit}}}}$

When the value of the function is given, then it is very easy to solve it. Just put the value in the equation, and the answer is found.

Answer 2

Answer:

p=9

Step-by-step explanation:

$\boxed{given}$

p=3z^2-4z+5

$\boxed{Tofind}$

z=2

$\boxed{answer}$

substituiting z=2 in 3z^2-4z+5

we get

$p = 3(2) {}^{2} - 4(2) + 5$

$p = 12 - 8 + 5$

$p = 9$