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what to do!?
- Thread starter Ben J
- Start date
D
Deleted member 4993
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Ben J said:Multiply.
(5z+5x-6)(7z-4x+2)
Simplify Answer.
Do i just multiply the like terms together(ex 1) or do i have to distribute each term to the other(ex2)?
ex1 - 35z - 20x -12
ex2 - 35z^2 - 20zx + 10z...etc..
thank you in adv
(5z+5x-6)(7z-4x+2) = (5z)(7z-4x+2) + (5x)(7z-4x+2) + (-6)(7z-4x+2) = (35z[sup:24whhnq9]2[/sup:24whhnq9] - 20xz + 10z) + (35xz - 20x[sup:24whhnq9]2[/sup:24whhnq9] + 10x) + (-42z + 24x - 12)
Now collect like terms and simplify....
D
Deleted member 4993
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Ben J said:is,
35z[sup:jlfa96x1]2[/sup:jlfa96x1]- 20x[sup:jlfa96x1]2[/sup:jlfa96x1] + 15xz - 32z +34x - 12 correct?
Looks good to me....
D
Deleted member 4993
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Start a new thread with new problem
check the factorization of the denominator.
Ben J said:i got stuck on this one too....
simplify.
(w[sup:2kls2fj6]2[/sup:2kls2fj6] + 2w - 3) / (4w[sup:2kls2fj6]2[/sup:2kls2fj6] - 36)
this is what i have....
(w+3)(w-1) / (w-9)(w+9)
am i on the right track? <<< You are using correct method - but factorization is not correct.
check the factorization of the denominator.
\(\displaystyle 4w^2 \ \ - \ \ 36 \ \ = \ \ 4\cdot (w^2 \ \ - 3^2) \ \ = \ \ 4\cdot (w \ \ - \ \ 3)\cdot (w \ \ + \ \ 3)\)[/spoiler:2kls2fj6]