Resources

Resources

Bytelearn - cat image with glasses

AI tutor

Welcome to Bytelearn!

Let’s check out your problem:

Given
f(x)=2x^(2)-7x-18, find
f(-1)
Answer:

Given $f(x)=2 x^{2}-7 x-18$ , find $f(-1)$ $\newline$ Answer:

View step-by-step help

View step-by-step help

Evaluate expression when a complex numbers and a variable term is given

Full solution

Q. Given

f(x)=2 x^{2}-7 x-18

, find

f(-1)

\newline

Answer:

Substitute $x$ with $-1$ : To find $f(-1)$ , we need to substitute $x$ with $-1$ in the function $f(x) = 2x^2 - 7x - 18$ .
Calculate square of $-1$ : Substitute $x$ with $-1$ : $f(-1) = 2(-1)^2 - 7(-1) - 18$ .
Multiply by $2$ : Calculate the square of $-1$ : $(-1)^2 = 1$ .
Multiply $-7$ by $-1$ : Multiply $2$ by the square of $-1$ : $2 \times 1 = 2$ .
Add and subtract $18$ : Multiply $-7$ by $-1$ : $-7 \times -1 = 7$ .
Calculate final value: Add the results of the previous steps and subtract $18$ : $f(-1) = 2 + 7 - 18$ .
Subtract $18$ from $9$ : Calculate the final value: $f(-1) = 9 - 18$ .
Subtract $18$ from $9$ : Calculate the final value: $f(-1) = 9 - 18$ . Subtract $18$ from $9$ : $f(-1) = -9$ .

More problems from Evaluate expression when a complex numbers and a variable term is given

Question

\newline

8i + 6i

\newline

\newline

Write your answer in the form

a + bi

\newline

\underline{\hspace{1cm}}

\newline

Posted 2 months ago

Question

Find the complex conjugate of the given number.

\newline

4 + 10i

\newline

\newline

Write your answer in the form

a + bi

\newline

Posted 1 month ago

Question

\newline

\frac{{-4i}}{{-9i}}

\newline

\newline

Write your answer in the form

a + bi

. Reduce all fractions.

\newline

\_\_\_\_\_

\newline

Posted 1 month ago

Question

Combine the like terms to create an equivalent expression.

\newline

7k-k+19=\boxed{\phantom{0}}

Posted 4 months ago

Question

Apply the distributive property to factor out the greatest common factor.

\newline

9+12 n=

Posted 1 month ago

Question

Solve the equation.

\newline

\begin{aligned} & 12=n-9 \\ n= & \square \end{aligned}

Posted 4 months ago

Question

What is the amplitude of

y=-\sin (8 x-3)+5

\newline

Posted 2 months ago

Question

What is the period of

\newline

y=4 \sin (-2 x+7)-1 \text { ? }

\newline

Give an exact value.

\newline

Posted 1 month ago

Question

3 \cdot(3+20 i)=

\newline

Your answer should be a complex number in the form

a+b i

a

b

are real numbers.

Posted 3 months ago

Question

(35-23 i)+(13+25 i)=

\newline

Express your answer in the form

(a+b i)

Posted 1 month ago