If m and n are the roots of the equation x2-2x+3=0, then find the value of 1/m2 + 1/n2
if x+y=a , xy=b , prove that (1+x2) (1+y2)=a2-(1-b2)
If the roots of the equation (b-c)x²+(c-a)x+(a-b)=0 are equal then prove that b=a+c/2
If b=a+b then show that the equation ax²+bx+c=0 has rational roots
A piece of cloth costs Rs.200.If the piece was 5m longer and each meter of cloth costs Rs.2 less.The cost of the piece would have remained unchanged.How long is the piece and what is the original rate per meter
the sum of the ages of father and his son is 45years.5 year ago the product of their ages was 124years.determine their present ages
(a) equal (b) distinct (c) imaginary
1) a?-ma 1=0.
2) x?-mx+9=0
3) r?-(m+1) r+4=0
1) x?+x-(a-2)(a+1)=0
1) a(x2+1)=x(a2+1)
2) x2+x-(a-2)(a+1)=0
Q. How many terms of A.P. 9.17.25..... must be taken to give a sum of 636.
Q. The product of two consecutive integer is 30.6. Find the integers.
If m and n are the roots of the equation x2-2x+3=0, then find the value of 1/m2 + 1/n2
if x+y=a , xy=b , prove that (1+x2) (1+y2)=a2-(1-b2)
If the roots of the equation (b-c)x²+(c-a)x+(a-b)=0 are equal then prove that b=a+c/2
If b=a+b then show that the equation ax²+bx+c=0 has rational roots
A piece of cloth costs Rs.200.If the piece was 5m longer and each meter of cloth costs Rs.2 less.The cost of the piece would have remained unchanged.How long is the piece and what is the original rate per meter
the sum of the ages of father and his son is 45years.5 year ago the product of their ages was 124years.determine their present ages