Q.1 if a-b=3 and ab=10 then find the value of a²+b²+ab.
give answer in attachment and don't spam
Answers
Answered by
1
a-b=3 _____1).
ab=10 _____2).
a²+b²+ab
from 1). a=3+b
putting a in eq.2).
b(3+b)=10
3b+b²=10
b²+3b-10=0
b²+5b-2b-10=0
b(b+5)-2(b+5)=0
(b-2)(b+5)=0
b-2=0 b+5=0
b=2 b= -5
putting b in eq.1).
a-(2)=3 a(-5)=3
a=3+2 a+5=3
a=5 a=3-5
a= -2
Answered by
0
Step-by-step explanation:
a-b=3 _____1).
ab=10 _____2).
a²+b²+ab
from 1). a=3+b
putting a in eq.2).
b(3+b)=10
3b+b²=10
b²+3b-10=0
b²+5b-2b-10=0
b(b+5)-2(b+5)=0
(b-2)(b+5)=0
b-2=0 b+5=0
b=2 b= -5
putting b in eq.1).
a-(2)=3 a(-5)=3
a=3+2 a+5=3
a=5 a=3-5
a= -2
Similar questions