Page 164 - sscbbb

मदद सभीकयण ax2 –bx+c=0 के भरू ों के फीच का अतॊ य 4है,तो ननम्नभरखखत भें से कौन
सा सत्म है?
[A]b2 –16a2 =4ac+4b2
[C]b2 –8a2 =4ac+10a2
192. and are the roots of quadratic equation. If + = 8 and – = 2√ ,then which of the following equation will have roots and ?
औय द्विघातीम सभीकयण के भरू हैं.मदद + =8औय – =2√ हो ,तो ककस सभीकयण भें भरू औय होंगे ? 21 February 2018 SSC MAINS
[A]x2 –1522x+14641=0 [B]x2 –1921x+14641=0
[C]x2 –1764x+14641=0 [D]x2 –2520x+14641=0
193.If a and b are the roots o the equation Px2 – Qx + R = 0, then what is the value of (1/a2) + (1/b2) + (a/b) + (b/a)?
मदद aऔय b,सभीकयण Px2 –Qx+R=0 के भरू हैं,तो (1/a2)+(1/b2)+(a/b)+(b/a) का भान ककतना है? 21 February 2018 SSC MAINS
[A] [B]
[C] [D]
194. If x2 – 16x + 59 = 0,then what is the value of (x - 6)2 + [1/(x - 6)2]? मददx2 –16x+59=0 हो,तो (x-6)2 +[1/(x-6)2] का भान ककतना है?
21 February 2018 SSC MAINS
[A] 14 [B] 18 [C] 16 [D] 20
195. If a and b are the roots of the equation ax2 – a2x + ab = 0,then what is the value of a and b respectively?
मददaऔयb,सभीकयण Aax2 –a2x+ab=0 के भरू हैं.तो क्रभश् aऔय b का भान
[B]b2 –10a2 =4ac+6a2 [D]b2 –16a2 =4ac+8b2
21 February 2018 SSC MAINS
ककतना है?
[A] 47 [B] 54 [C] 59 [D] 68 197. Ifa+b+c=9,ab+bc+ca=26,a3 +b3=91,b3 +c3 =72andc3 +a3 = 35,then what is the value of abc?
मदद a+b+c=9,ab+bc+ca=26,a3 +b3=91,b3 +c3 =72औयc3 +a3 =35,तो abc
21 February 2018 SSC MAINS
[B] 1, 1 [C] 0, 2 [D] 0, 1 are the roots of the quadratic equation x2 – x – 1 = 0. What is the
?
औय ,द्विघात सभीकयण x2 –x–1=0 के भरू है. का भान ऻात कीजजए ?
21 February 2018 SSC MAINS
[A] 1, 0 196. and value of
का भान ककतना है?
21 February 2018 SSC MAINS
172