Question

1. If a+ b = 7 and ab= 12 find the value of a square + b square
2. If a- b = 5 and ab= 12, find the value of a square + b square
Please answer it!!
I will surely mark as brainliest!

Answer 1

Answer:

hope this is the correct answer

Answer 2

Answer:1)25

             2)1

Step-by-step explanation:

1) a+b=7 & ab=12

  (a+b)²=a²+b²+2ab

  (7)²=a²+b²+2*12

  49=a²+b²+24

  a²+b²=49-24=25

2) a-b=5 & ab=12

    (a-b)²=a²+b²-2ab

    5²=a²+b²-2*12

    25=a²+b²-24

    a²+b²=25+24=49