wilks311
(x5)(x+3)=33 ; find the real roots



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cwrw238
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(x5)(x+3)=33
x^2  2x  15 = 33
x^2  2x  48 = 0
can u continue from here?

wilks311
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Thanks! Just realized my mistake. added 33 instead of subtracting

cwrw238
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yw

wilks311
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Ah another question. Havent done this stuff in 4 years.

wilks311
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(x+2)^2(x1)+(x+2)(x1)^2

whpalmer4
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\[(x+2)^2(x1) + (x+2)(x1)^2\]multiply it out, step by step:
\[(x+2)^2 = (x+2)(x+2) = x^2+2x+2x+4 = x^2+4x+4\]
\[(x^2+2x+4)(x1) = x^3x^2+2x^22x+4x4 = x^3+x^2+2x4\]
\[x^3+x^2+2x4 + (x+2)(x1)^2\]you do the rest, then simplify

wilks311
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I've gotten down to 2x^3+3x^211x2
Any help factoring that please?

whpalmer4
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@cwrw238 pretty sure that those 2s outside parentheses are supposed to be ^2

cwrw238
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yea  u r right

cwrw238
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i'm embarrassed!!

whpalmer4
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life would be easier if openstudiers couldn't copy and paste the questions, losing all of those valuable positional clues :)

cwrw238
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yea

wilks311
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Guys , you didnt need to expand!

whpalmer4
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we didn't need to do anything, really :)

wilks311
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just do something similar like a^2v +ab^2 = ab(a+b) then solve!

wilks311
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gah im hitting myself >:(