Question and Answers Forum

All Questions      Topic List

None Questions

Previous in All Question      Next in All Question      

Previous in None      Next in None      

Question Number 9675 by ridwan balatif last updated on 23/Dec/16

Commented by ridwan balatif last updated on 23/Dec/16

please someone help me to translate this question into English and help me to solve this question

$$\mathrm{please}\:\mathrm{someone}\:\mathrm{help}\:\mathrm{me}\:\mathrm{to}\:\mathrm{translate}\:\mathrm{this}\:\mathrm{question} \\ $$$$\mathrm{into}\:\mathrm{English}\:\mathrm{and}\:\mathrm{help}\:\mathrm{me}\:\mathrm{to}\:\mathrm{solve}\:\mathrm{this}\:\mathrm{question} \\ $$

Commented by sandy_suhendra last updated on 23/Dec/16

P(x)=x^4 +x^3 −11x^2 −30x−24 =(x+2)(x−4)(x^2 +3x+3) x^2 +3x+3 ⇒ has imaginary roots Q(x)=x^3 −x^2 −14x+8 =(x−4)(x^2 +3x−2) x^2 +3x−2 ⇒ x_(1,2) =((−3±(√(17)))/2) x_1 .x_2 =(c/a)=−2 but I don′t understand with the question I hope this can help you

$$\mathrm{P}\left(\mathrm{x}\right)=\mathrm{x}^{\mathrm{4}} +\mathrm{x}^{\mathrm{3}} −\mathrm{11x}^{\mathrm{2}} −\mathrm{30x}−\mathrm{24} \\ $$$$\:\:\:\:\:\:\:\:\:\:=\left(\mathrm{x}+\mathrm{2}\right)\left(\mathrm{x}−\mathrm{4}\right)\left(\mathrm{x}^{\mathrm{2}} +\mathrm{3x}+\mathrm{3}\right) \\ $$$$\mathrm{x}^{\mathrm{2}} +\mathrm{3x}+\mathrm{3}\:\Rightarrow\:\mathrm{has}\:\mathrm{imaginary}\:\mathrm{roots} \\ $$$$ \\ $$$$\mathrm{Q}\left(\mathrm{x}\right)=\mathrm{x}^{\mathrm{3}} −\mathrm{x}^{\mathrm{2}} −\mathrm{14x}+\mathrm{8} \\ $$$$\:\:\:\:\:\:\:\:\:\:=\left(\mathrm{x}−\mathrm{4}\right)\left(\mathrm{x}^{\mathrm{2}} +\mathrm{3x}−\mathrm{2}\right) \\ $$$$\mathrm{x}^{\mathrm{2}} +\mathrm{3x}−\mathrm{2}\:\Rightarrow\:\mathrm{x}_{\mathrm{1},\mathrm{2}} =\frac{−\mathrm{3}\pm\sqrt{\mathrm{17}}}{\mathrm{2}}\: \\ $$$$\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\mathrm{x}_{\mathrm{1}} .\mathrm{x}_{\mathrm{2}} =\frac{\mathrm{c}}{\mathrm{a}}=−\mathrm{2} \\ $$$$\mathrm{but}\:\mathrm{I}\:\mathrm{don}'\mathrm{t}\:\mathrm{understand}\:\mathrm{with}\:\mathrm{the}\:\mathrm{question} \\ $$$$\mathrm{I}\:\mathrm{hope}\:\mathrm{this}\:\mathrm{can}\:\mathrm{help}\:\mathrm{you} \\ $$

Terms of Service

Privacy Policy

Contact: info@tinkutara.com