Ответ:
4x(x+3)-(2x+5)(2x-5)=49
4x² + 12x - 4x² + 10x - 10x + 25 = 49
12x = 49 - 25
12x = 24
x=2
2
Объяснение:
4х²+12х-(4х²-25)-49=0
4х²+12х-4х²+25-49=0
12х=24; х=2
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Ответ:
4x(x+3)-(2x+5)(2x-5)=49
4x² + 12x - 4x² + 10x - 10x + 25 = 49
12x = 49 - 25
12x = 24
x=2
Verified answer
Ответ:
2
Объяснение:
4x(x+3)-(2x+5)(2x-5)=49
4х²+12х-(4х²-25)-49=0
4х²+12х-4х²+25-49=0
12х=24; х=2