Sunday

January 25, 2015

January 25, 2015

Posted by **Anonymous** on Wednesday, August 8, 2007 at 4:39pm.

(x+3)(x-3)>0 answer: x<-3 or x>3

x^2-2x-15</=0 answer: -3</=x</=5

12x^2=3x answer: x=1/4

sin2x=sinx, 0</=x</=2pi answer: x=pi

lx-3l<7 answer: (-oo,oo)

(x+1)^2(x-2)+(x+1)(x-2)^2=0

answer: x=-1,2,1/2

27^(2x)=9^(x-3)answer: x=-3/2

logx+log(x-3)=1 answer: x=-2, 5

(x+3)(x-3)>0 answer: x<-3 or x>3

x^2-2x-15</=0 answer: -3</=x</=5

12x^2=3x answer: x=1/4

sin2x=sinx, 0</=x</=2pi answer: x=pi

no. recall that sin2x = 2(sinx)(cosx)

so

2(sinx)(cosx)-sinx=0

sinx(2cosx -1=0

sinx=0 or cosx=1/2

then x=0,pi,2pi from the first

or x = pi/3 (60º) or 5pi/3 (300º)

lx-3l<7 answer: (-oo,oo)

(x+1)^2(x-2)+(x+1)(x-2)^2=0

answer: x=-1,2,1/2

27^(2x)=9^(x-3)answer: x=-3/2

logx+log(x-3)=1 answer: x=-2,5

**Answer this Question**

**Related Questions**

check math - Here are my answers. Can you check if I got the right answers? ...

Math - Hi, would someone mind just checking the answer I got for this formula ...

Calculus - please check my work - differentiate each function a) y = cos^3x b) y...

Algebra - Would someone please check these answers? Simplify. 3/x-5+1/1-4/x-5 ...

check math - Here are my answers. Can you check if I got the right answers? ...

8th Grade Algebra: Answer Check #2 - Add or Subtract (Radicals) { this means ...

Pre-Cal(Please check) - Approximate the equation's solutions in the interval (0,...

Math 8R: Homework Check - Part 2 - Part 2: Simplify by combining like terms and...

Algebra - Can someone check my algebra answers and help me with the problems I ...

check math - Here are my answers. Can you check if I got the right answers? ...