if a + b = 5 and a cube plus b cube =35 then find a square + b square
Answers
Answered by
3
Answer:a2 +b2 = 7+ab
Step-by-step explanation:
sneha6j004:
Answer is wrong
no
just like that
Yeah of course it's wrong
no it is not
the answer is correct
Then why don't you explain it?
Yeah it's wrong
# tanya ...r u having the answer of this question with u.....because what i did the method was correct
It's down
Answered by
7
Answer:
Step-by-step explanation:
(a+b)^3 =5^3
a^3 +b^3 +3ab(a+b)=125
35 + 3ab(5)= 125
15ab =125-35
15ab=90
ab= 6
Now use ab in (a+b)^2
(a+b)^2 = 5^2
a^2+b^2+2ab=25
a^2+b^2+12=25
Therefore, a^2+b^2=25-12 = 13
Answered by
4
Answer:
Step-by-step explanation:
(a+b)^3 =5^3
a^3 +b^3 +3ab(a+b)=125
35 + 3ab(5)= 125
15ab =125-35
15ab=90
ab= 6
Now use ab in (a+b)^2
(a+b)^2 = 5^2
a^2+b^2+2ab=25
a^2+b^2+12=25
Therefore, a^2+b^2=25-12 = 13
do you study in st. Paul's unit w
No i don't.why?
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