35+(5х+1)(5х-1)=(5х+2)²
35+25х²-1=25х²+20х+4
20х=35-1-4
20х=30
х=30:20
х=3/2=1,5
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35+(5х+1)(5х-1)=(5х+2)²
35+25х²-1=25х²+20х+4
20х=35-1-4
20х=30
х=30:20
х=3/2=1,5