Odpowiedź:
x²-8x+m=0
∆=64-4m
√∆=√(64-4m)=2√(16-m)
x1=(8-2√(16-m))/2=4-√(16-m)
x2=4+√(16-m)
x1²+x2²=34
(4-√(16-m))²+(4+√(16-m))²=34
16-8√(16-m)+16-m+16+8√(16-m)+16-m=34
64-2m=34 |-64
-2m=-30 |÷(-2)
m=15
Odp.: Dla m=15 suma kwadratów pierwiastków równania będzie równa 34.
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Odpowiedź:
x²-8x+m=0
∆=64-4m
√∆=√(64-4m)=2√(16-m)
x1=(8-2√(16-m))/2=4-√(16-m)
x2=4+√(16-m)
x1²+x2²=34
(4-√(16-m))²+(4+√(16-m))²=34
16-8√(16-m)+16-m+16+8√(16-m)+16-m=34
64-2m=34 |-64
-2m=-30 |÷(-2)
m=15
Odp.: Dla m=15 suma kwadratów pierwiastków równania będzie równa 34.