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4 years ago

I have a math test tomorrow and it is really hard so what should I do?

2 answers:

7 0

I would start at the beginning of the chapter and study by making flash cards for all the terms you come across, and making sure you know how to do the steps on each problem you come across. If you don't understand how to do a problem, try watching YouTube videos or asking a parent/facilitator/teacher.

If you have any questions, feel free to pm me! :-)

nata0808 [166]4 years ago

5 0

You should look over your notes and do some practice problems. It helps out a lot.

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This is the term used when energy changes from one form to another. Please help, its a load of points reward

Bond [772]

Energy transfer is your answer <span />

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3 years ago

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A variable needs to be eliminated to solve the system of equations

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Answer:

The first step would be to subtract the two equations.

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3 years ago

Multiply. (2x2 + 4x - 3)(x2 - 2x + 5)

BigorU [14]

For a moment, let $y=x^2-2x+5$ . Then by the distributive property,

$(2x^2+4x-3)p=2x^2p+4xp-3p$

Again by the distributive property,

$2x^2p=2x^2(x^2-2x+5)=2x^4-4x^3+10x^2$

$4xp=4x(x^2-2x+5)=4x^3-8x^2+20x$

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Taking everything together, we get

$(2x^2+4x-3)(x^2-2x+5)=(2x^4-4x^3+10x^2)+(4x^3-8x^2+20x)+(-3x^2+6x-15)$
$(2x^2+4x-3)(x^2-2x+5)=2x^4-x^2+26x-15$

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3 years ago

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What is these in simplest form <br> a) 2a + 4 + 5a + 8 = <br> b) -2b – 7 + 3b – 8 =

iren [92.7K]

Answer:

a ) 7a + 12

b) b - 15

Step-by-step explanation:

a)2a+5a +8+8

= 7a + 12

b) b - 7 - 8

= b-15

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3 years ago

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grigory [225]

Answer:

2x(7x - 3)(7x +3)

Step-by-step explanation:

Find common factors between the 2 numbers:

98x^3 - 18x

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2x(7x - 3)(7x +3)

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3 years ago

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