ShmoopTube
Where Monty Python meets your 10th grade teacher.
Search Thousands of Shmoop Videos
Factoring Videos 19 videos
ACT Math Intermediate Algebra Drill 1, Problem 4. Solve for x based on the equation.
ACT Math Intermediate Algebra Drill 1, Problem 5. Can you simplify the expression?
ACT Math Intermediate Algebra Drill 2, Problem 1. Solve the equation.
SAT Math 5.4 Algebra and Functions 291 Views
Share It!
Description:
SAT Math 5.4 Algebra and Functions
- Algebra and Functions / Solving Quadratic Equations by Factoring
- Product Type / SAT Math
- Functions / Build new functions from existing functions
- Functions / Build new functions from existing functions
- Algebra / Write expressions in equivalent forms to solve problems
- Algebra / Write expressions in equivalent forms to solve problems
- Algebra / Write expressions in equivalent forms to solve problems
- Functions / Build new functions from existing functions
- Functions / Build new functions from existing functions
- Passport to Advanced Math / Quadratic and exponential functions (word problems)
Transcript
- 00:02
Gettin' shmoopy with it...
- 00:04
If g of x = the square root of x - 1 to the fourth...what is g of x + 1?
- 00:09
And here are the potential answers...
- 00:14
We're working with composite functions, so all we have to do for this is replace the
- 00:19
instances of x in the first equation with x + 1.
Full Transcript
- 00:24
g of x + 1 = the square root of x + 1 - 1 all to the fourth.
- 00:33
Using the order of operations, we have to deal with the inside of the parentheses first...
- 00:40
So we get, x + 1 - 1 = just x.
- 00:44
So the square root of x to the 4th is just...x squared.
- 00:49
Looks like our answer's A.
Related Videos
SAT Math 2.1 Geometry and Measurement. What is the measure of angle z in terms of x and y?
In 2014, the unemployment rate of one county in California was 7%. In another county, the unemployment rate was 11%. Which of the following express...
Angela is making cookies for a bake sale. She expects each batch of her cookies to sell for $40. It costs her $10 to make one batch of cookies, and...