HW 30: 1.8 part 1

HW 30: 1.8 part 1

10th - 12th Grade

8 Qs

quiz-placeholder

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HW 30: 1.8 part 1

HW 30: 1.8 part 1

Assessment

Quiz

Mathematics

10th - 12th Grade

Medium

Created by

Kimberly Compean

Used 7+ times

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8 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 f(x)=x2+5x, g(x)=4x+2f\left(x\right)=x^2+5x,\ g\left(x\right)=4x+2  Find (f+g)(x)

 4x2+2x4x^2+2x  

 x2+9x+2x^2+9x+2  

 x2+20x+1x^2+20x+1  

 x2+x+2x^2+x+2  

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 f(x)=x2+5x, g(x)=4x+2f\left(x\right)=x^2+5x,\ g\left(x\right)=4x+2  Find  (fg)(x)\left(f-g\right)\left(x\right)  

 x2+9x+2x^2+9x+2  

 x2+x+2x^2+x+2  

 x2+x2x^2+x-2  

 4x2x+24x^2-x+2  

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 f(x)=x2+5x, g(x)=4x+2f\left(x\right)=x^2+5x,\ g\left(x\right)=4x+2  Find  (fg)(x)\left(f\cdot g\right)\left(x\right)  

 4x3+5x+10x4x^3+5x+10x  

 x3+20x+10x^3+20x+10  

 4x2+22x+104x^2+22x+10  

 4x3+22x2+10x4x^3+22x^2+10x  

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 f(x)=x2+5x, g(x)=4x+2f\left(x\right)=x^2+5x,\ g\left(x\right)=4x+2  Find  (fg)(x)\left(\frac{f}{g}\right)\left(x\right)  

 x(x+5)2(2x+1)\frac{x\left(x+5\right)}{2\left(2x+1\right)}  

 2(x+1)x(x+5)\frac{2\left(x+1\right)}{x\left(x+5\right)}  

 x2+5xx+2\frac{x^2+5x}{x+2}  

 x+52x+1\frac{x+5}{2x+1}  

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 f(x)=xx2+4, g(x)=2xf\left(x\right)=\frac{x}{x^2+4},\ g\left(x\right)=\sqrt{2-x}  Find (f+g)(x)

 xx2+4+2x\frac{x}{x^2+4}+\sqrt{2-x} 

 xx2+42x\frac{x}{x^2+4}-\sqrt{2-x}  

 x22x+4\sqrt{\frac{x^2-2}{x+4}}  

 x2x16\sqrt{\frac{x}{2x-16}}  

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 f(x)=xx2+4, g(x)=2xf\left(x\right)=\frac{x}{x^2+4},\ g\left(x\right)=\sqrt{2-x}  Find  (fg)(x)\left(f-g\right)\left(x\right)  

 xx2+4+2x\frac{x}{x^2+4}+\sqrt{2-x} 

 xx2+42x\frac{x}{x^2+4}-\sqrt{2-x}  

 x22x+4\sqrt{\frac{x^2-2}{x+4}}  

 x2x16\sqrt{\frac{x}{2x-16}}  

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 f(x)=xx2+4, g(x)=2xf\left(x\right)=\frac{x}{x^2+4},\ g\left(x\right)=\sqrt{2-x}  Find  (fg)(x)\left(f\cdot g\right)\left(x\right)  

 xx2+4+2x\frac{x}{x^2+4}+\sqrt{2-x} 

 x2x2+4\frac{x-2}{x^2+4}  

 x2xx2+4\frac{x\sqrt{2-x}}{x^2+4}  

 2xx+4\frac{\sqrt{2-x}}{x+4}  

8.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 f(x)=xx2+4, g(x)=2xf\left(x\right)=\frac{x}{x^2+4},\ g\left(x\right)=\sqrt{2-x}  Find  (fg)(x)\left(\frac{f}{g}\right)\left(x\right) 

 x(x2+2)(4x)\frac{x}{\left(x^2+2\right)\left(\sqrt{4-x}\right)} 

x2xx2+4\frac{x\sqrt{2-x}}{x^2+4}

 x2+xx24\frac{x\sqrt{2+x}}{x^2-4} 

x(x2+4)(2x)\frac{x}{\left(x^2+4\right)\left(\sqrt{2-x}\right)}