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(3-2x)²+(3-x)²=(√5x)²
9-12x+4x²+9-6x+x²=5x²
18+5x²-18x=5x²
18=18x |:18
x=1
b)
(√3x)²+(x+1)²=(2-2x)²
3x²+x²+2x+1=4-8x+4x²
4x²+2x+1=4-8x+4x²
2x+8x=4-1
10x=3 |:10
x=3⅓