(3х+2)² = 10+3(х-2)(х+2)
3х²+12х+2² = 10+3х²-3×2²
3х²-12х+4 = 10+3х²-12
12х+4 = 10-12
12х+4 = -2
12х = -6
х = -6:12
х = -0,5
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(3х+2)² = 10+3(х-2)(х+2)
3х²+12х+2² = 10+3х²-3×2²
3х²-12х+4 = 10+3х²-12
12х+4 = 10-12
12х+4 = -2
12х = -6
х = -6:12
х = -0,5