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SAT Math 9.2 Algebra and Functions
377 Views

SAT Math 9.2 Algebra and Functions

SAT Math 9.4 Algebra and Functions
1300 Views

SAT Math 9.4 Algebra and Functions

Multiplying Polynomials to Find an Unknown Constant
3 Views

In the equation above, if a, b, and c are all constants, what is c?

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SAT Math 5.4 Algebra and Functions 291 Views


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SAT Math 5.4 Algebra and Functions

Language:
English Language

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.

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.

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