Question

49 X во второй степени - 16 = 0

Answer 1

49х²-16=0
(7х-4)(7х+4)=0


[7х-4=0
[7х+4=0


[7х=4
[7х=-4


[х=47
[х=-47

Answer 2

49x²-16=0
49x²=16
x²=16/49
x = - 4/7 , 4,7