Ответ:
2) x^2-4=-4x^2=-4+4x=04) 9x^2+16x=0x(9x+16)=0x=09x+16=0x1=0x2= -16/96) 2x^2+1=33 2x^2= 33-12x^2= 32x2=16x1= 4x2= -48) x+4 =±3x-4= -3x-4= 3x1= -7x2 = -1
Объяснение:
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Ответ:
2) x^2-4=-4
x^2=-4+4
x=0
4) 9x^2+16x=0
x(9x+16)=0
x=0
9x+16=0
x1=0
x2= -16/9
6) 2x^2+1=33
2x^2= 33-1
2x^2= 32
x2=16
x1= 4
x2= -4
8) x+4 =±3
x-4= -3
x-4= 3
x1= -7
x2 = -1
Объяснение: