InterviewSolution
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InterviewSolution
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010. Using quadratic formula, solve the following,(1) pogo2(932 - q?) x -- que = 0(0) -- 2ax + (622-02) = 09x2 - 3(a + b) x + a²b2 = 09x2-3(a+b)xtab |
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Answer» p^2x^2+(p^2-q^2)x-q^2=0p^2x^2+p^2x-q^2x-q^2=0p^2x(x+1)-q^2(x+1)=0(x+1)(p^2x-q^2)=0either x+1=0 , x= -1or p^2x-q^2=0p^2x=q^2x= q^2/p^2 2) x^2-2ax+(a-b)(a+b)=0x^2-x{(a+b)+(a-b)+(a-b)(a+b)=0x^2-x(a+b)-x(a-b)+(a+b)(a-b)=0x{x-(a+b)}-(a-b){x-(a+b)}=0{x-(a+b)}{x-(a-b)}=0either x--(a+b)=0x= a+bor x-(a-b)=)x= a-b |
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