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How do you prove this?

Is sin2xsinx-cosx = -(3root3)/2 true for 7pi/6? Explain.

4x-3/3 - 6x-3/5 = 2

I am not sure how to solve this.

Helppppp Please ( solving system of equations)

3x+4y=9 4x-37=-13

do to an incendent i suppose to do the following to help.....

x2-9y2-4x-18y=14

write 12X2-96X+197 in this form a(x+k)2+M

Both number twos are squared. I know the answer is 12(x-4)2+5. the number 2 is squared. can you show me how to work out please .thank you

2X2+3X=20 Complete the square

Solve by completing the square. The Number two after the X is squared. I know the answer is x=-4 or X=5/2 could you please show how to get that.

What is the area of a box with that is 3x*2x+xy? But there are two empty boxes in that box that are x*x. 2 of them.

So it would be 3x*2x+xy   -2x for the two boxes that are x*x

What is the growth for -2x-3y+1=-x-4y+4?

What is the growth, also could you tell me a way to find the growth with similar problems?

What is the growth for -6x+5y=-3(2-y)?

What is the growth , also could you tell me a way to figure out the growth for problems like this?

What is the growth for the equation x(x+5)+y=(x+2)(x-2)?

What is the growth for the equation?  Also could you tell me a way that could help me find the growth for the equation?

0=-28+24x-20y 6y=10x solve system by elimination

solve system by elimination

-8x-5y=10 5x-15y=30 solve by elimination

solve by elimination

(e^x)-2+(e^-x)=0I know the answer is x=0, but I don't know how to show the process algebraically.

I am suppose to solve for x. I know the answer is x=0, but I am having problems algebraically solving. Do get the exponents on one side and then get rid of the exponents?

How do you simplify and solve equations?

I am in 7th grade and I just learned how to solve equations. I am absolutely stumped. I need help sand I forgot my book in my locker.

i need some help on algebra 1 solving equations 15x+30=90 can you tell me the answer please

hi im steven and i need some help on algebra 1 please thanks

3(x-4)=18x

need help so I may assist my daughter with her homework

Pleas help me

hello i need help to solve 4^x=3^x+1 i can't find out how to do it i know that i have to use LOG but how??? could you help me step by step?? Jakob

8x²-2x-1