How to solve these ?1)If the equation(a^2+b^2)x^2 - 2b(a+c)x + b^2+c^2 has equal roots then , which of the following is right and how ?a) 2b=a+c b)b^2=ac c)b=2ac/a+c d)b=ac2)If the equation(a^2+b^2)x^2 - 2(ac+bd)x +c^2+d^2 = 0 has equal roots thena)ab=cd b)ad=bc c)ad=under root bc d)ab=under root cd
saravanan ramesh , 11 Years ago
Grade 10
2 Answers
Mostafijur Rahaman
Last Activity: 11 Years ago
1)b)b^2=ac
2)b)ad=bc
Pushkar Aditya
Last Activity: 11 Years ago
1)as it has equal roots so,(2ba+2cb)^2=4(a^2+b^2)(b^2+c^2)
8ab^2c=4b^2(b^2+c^2)
(b-c)^2=0
b=c
2ac=2b^2
b)b^2=ac answer
2)(2ac+2bd)^2=4(a^2+b^2)(c^2+d^2)
(ad-bc)^2=0
b)ad=bc answer
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