A+b=7 and ab=12 find a^2+b^2
Answers
Answered by
2
Step-by-step explanation:
a²+b²
= (a+b)² - 2ab
= (7)² - 2*12
= 49-24
= 25
Answered by
0
a²+b²-ab
7²-12×2
49-24
25
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