Ответ:
1.
2. 4-9(2-5х)²=0
4-9(25х²-20х+4)=0
4-225х²-180х+36=0
225х²-180х+32=0
х=8/15
х=4/15
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Answers & Comments
Ответ:
1.
2. 4-9(2-5х)²=0
4-9(25х²-20х+4)=0
4-225х²-180х+36=0
225х²-180х+32=0
х=8/15
х=4/15