If a+b=2,a-b=-2 then a²+b²=?
1994sitthiphorn:
a²+b²=4
Answers
Answered by
0
Step-by-step explanation:
Mark it as brainliest .....
Attachments:
Answered by
0
Answer:
a+b=2
a=2-b
;a-b=-2
2-b-b=-2
2-2b=-2
-2b=-4
b=-4+2=2
;a+b=2
a+2=2
a=0
;a²+b²= 0²+2² = 0+4=4
Similar questions