I don't really remember how to solve this can someone help walk me through it?
2x^2=-7x+4
I need to solve by factoring..

Question

I don't really remember how to solve this can someone help walk me through it? 
2x^2=-7x+4 
I need to solve by factoring..

pooja195 · Answer

Ok basically first we need to put the equation into standered form which looks like this: 
$$\huge~\rm~\bf~ax^2+bx+c=0$$
Can you you do that please?

anonymous · Answer

Okay If I do that I get 2x^2+7x-4=0

pooja195 · Answer

Ok good
$$\huge~\rm~\bf2x^2+7x−4=0$$
Lets use factor by grouping method
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pooja195 · Answer

So what is 
$$\huge~\rm~-4 \times 2=? $$

anonymous · Answer

-8

pooja195 · Answer

Good the 7 remains the same now we have
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pooja195 · Answer

what NUMBERS multiply to -8 but add/subtract to make 7?

anonymous · Answer

-7 & -1

anonymous · Answer

Nevermind. I did that backwards

pooja195 · Answer

Those 2 aren't right
-7 x -1=7
-7-1=-8

anonymous · Answer

8 & 1

pooja195 · Answer

Good almost there  
it would be 
8 and -1

anonymous · Answer

Yup! (:

pooja195 · Answer

7x has been split into -1 and 8
now our equation looks like this
$$\huge~\rm~\bf2x^2-1+8x-4$$

$$\huge~\rm~\bf(2x^2-1)(8x-4)$$

We need to find a common factor for both of these

anonymous · Answer

When I factored it out I got (2x-1)(x+4)

pooja195 · Answer

That's the correct answer :)

anonymous · Answer

So now I just set them each to zero and I should have both zeros right?