if a + b = 2 and ab =7 a v equals to 12 find the values of a square + b square
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Answer:
a + b =2
ab= 7
Step-by-step explanation:
( a + b ) square = a square + b square + 2 *a*b
a square + b square = ( a + b ) square - 2 *a*b
2 square - 2* 7 = 4-7= -3
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