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Mathematics 6 Online
OpenStudy (anonymous):

solve 2x^2+3x-54

OpenStudy (aravindg):

USE QUADRATIC FORMULA

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

Here ya go... 2x^2+3x-54 = 2x^2 + 12x - 9x - 54 = 2x(x+6) -9(x+6) = (x+6)(2x-9)

OpenStudy (anonymous):

I hope that helps :)

OpenStudy (anonymous):

omg thanks i have a few more if you dont mind

OpenStudy (anonymous):

nope :)

OpenStudy (anonymous):

1. 4w^2-11w+6 2.3t^2+13t-10 3. 8x^2+5x-3 4. 18z^2+17z+4 please show work :)

OpenStudy (anonymous):

1. 4w^2-11w+6 = (w-2)(4w-3) 2.3t -13 = 2 +13 +13 Now, the -13 and the positive 13 cross out. And then you add 13 and 2. So you should now have this: 3t = 15. Now you just divide the 3t by 3 so you can get t alone. And whatever you do on one side, you have to do to the other. So you divide 15 by 3. 15 divided by 3 is 5. So the answer is: t = 5

OpenStudy (anonymous):

3. 8x^(2)+5x-3 In this problem 1*-(3)/(8)=-3 and 1-(3)/(8)=5, so insert 1 as the right hand term of one factor and -(3)/(8) as the right-hand term of the other factor. (x1)(x-(3)/(8)) Remove the fraction by multiplying the first term of the factor by the denominator of the second term. (x+1)(8x-3) 4. 8x^2+5x-3 = (8x-3)(x+1)

OpenStudy (anonymous):

I hope thats all correct :) and I hope its helpful! :)

OpenStudy (anonymous):

can u do 18z^2+17z+4 and 4w^2-11w+6 ..like how you do this 2x^2+3x-54 = 2x^2 + 12x - 9x - 54 = 2x(x+6) -9(x+6) = (x+6)(2x-9 please an thank you

OpenStudy (anonymous):

I got stuck on those two when I tried to use the same formula, I can use the quadratic formula?

OpenStudy (anonymous):

okay

OpenStudy (anonymous):

use it

OpenStudy (anonymous):

18z^2+17z+4=0 X1 = -1/2 X2 = -4/9 4w^2-11w+6=0 X1 = 2 X2 = 3/4

OpenStudy (anonymous):

is that better?

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