diego45
diego45
29-04-2018
Mathematics
contestada
Someone help me please
Respuesta :
mkryukova19
mkryukova19
29-04-2018
x²-6x=7
We need to complete square
x²-2*3x+3²=7+3²
x²-6x+9 =7+9
(x-3)² = 16
√(x-3)²=+/-√
16
x-3=+/-4
x-3=4 and x-3=-4
x=7, Largest
x= - 1 , Smallest
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