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

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I am not sure how to solve this.

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

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

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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

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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.

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

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

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

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

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solve system by elimination

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solve by elimination

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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?

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solving equations

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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.

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If I give you an equation will you help me try to figure it out? I use to be quite proficient w/math in grade school and just never used the modern math or algebra once I was out of K12, and now I'm...

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

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need help so I may assist my daughter with her homework

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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

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8x²-2x-1