(2х-4)²=49
(2x)²-2*2x*6+4²=49
4x²-16x+16=49
4x²-16x-33=0
4x²-22x+6x-33=0
2x(2x-11)+3(2x-11)=0
(2x+3)(2x-11)=0
1. x=-1 1/2
2. x=5 1/2
Ответ: x=-1 1/2; x=5 1/2
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(2х-4)²=49
(2x)²-2*2x*6+4²=49
4x²-16x+16=49
4x²-16x-33=0
4x²-22x+6x-33=0
2x(2x-11)+3(2x-11)=0
(2x+3)(2x-11)=0
1. x=-1 1/2
2. x=5 1/2
Ответ: x=-1 1/2; x=5 1/2