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3. Given: a+b=12 and ab=9 Use (a + b)2 to find a² +bº. (Do not solve for a and b individually)
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3. Given: a+b=12 and ab=9
Use (a + b)2 to find a² +bº. (Do not solve for a and b individually)

User Doctor J
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1 Answer

6 votes

Answer:

a²+b²=126

Explanation:

(a+b)²=a²+b²+2ab

(12)²=a²+b²+2×9

144=a²+b²+18

a²+b²=144-18=126

User Radlan
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8.3k points
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