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Gemiola
[76]
3 years ago
7
Which equations are true for x = –2 and x = 2? Check all that apply.
Mathematics
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1
answer:
4vir4ik
[10]
3 years ago
4
0
А. х²-4=0; х²=4; х=±2, true. B. x²=-4; there is no solution. C. 3x²+12=0; 3x²=-12; x²=-4; there is no solution. D. 4x²=16; x²=4; x=±2, true. E. 2(x-2)²=0; 2(x²-4x+4)=0; 2x²-8x+8=0; x²-4x+4=0; x1=2; x2=2. False. The answer: A, D.
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