solve it.....
question 1 to 8 plzzzz❤❤
Answers
Answer:
7th : Discriminant =b^2-4ac.
25-4×3×8 =25-96=-71
1) Prime numbers are numbers which have only two factors, one itself and the other is 1.
Co- prime are the pair of numbers which have only 1 as their common factor.
2)HCF(a,8)×LCM(a,8)
= a×8
4×24=a×8
a=4×24/8
a=12
3)If a prime p divides the product ab of two integers a and b, then p must divide at least one of those integers a and b.
4)
4×4×4×4×4×4×4×4×4×4+4
=(4)^10 +4
=4[(4)^9+1]
so ,the given number is divisible by 4
therefore it is divisible by any other number then itself and 1 so it is composite.
5)
221=13×17
6)3+√3 is irrational
3-√3 is also irrational
the sum of the numbers=6
which is rational
7)3x^2-5x+8=0
d=b^2-4ac
=(-5)^2-4×3×8
=25-96
=-71
8)ax^2+bx+c=0
No it will not be always quadratic , for a ,b ,c are real numbers
because
if a=0
the the equation will be become linear