Falling Behind in Studies? Join Our Performance Improvement Batch. Enroll For Free
One of our academic counsellors will contact you within 1 working day.
Click to Chat
1800-1023-196
+91-120-4616500
CART 0
Use Coupon: CART20 and get 20% off on all online Study Material
Welcome User
OR
LOGIN
Complete Your Registration (Step 2 of 2 )
Eqn x square + kx + cx=0 has equal roots and one roo of the eqn x sqaure + kx -12=0 is 2 then (k,c)=?
x^2+kx-12=0 has root:-2 ...................(given)=>-k+under root k^2+48whole divide2=2=>by solving this we get k=4....put this in below equationx^2+kx+cx=0,,,,then we getx^2 +4x+cx=0....and also given that this equation has same roots then;we know that;D=0=>b^2-4ac=04^2-4.1.c=016-4c=04c=16=>c=4therefore values of c and k are 4 and 4....
oh sorry here …D=0b=4+c=>4+c whole square -0=016+c^2+8c=0by solving this we getc=-4 and we had previous got that k=4
Post Question
Dear , Preparing for entrance exams? Register yourself for the free demo class from askiitians.
points won -