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25+x²=1
25-1=x²
24=x²
√24=x
b)3+2√2²+x²=6+√2²
3+(2×4)+x²=6×4
3+8+x²=24
11-24=x²
-13=x²
√-13=x
a) 25+x²=(x+1)²
25+x²=x²+2x+1
24=2x
x=12
Tak samo tutaj przy 3+2√2 i 6+√2 o tak:
b)(3+2√2)²+x²=(6+√2)²
9+12√2+8+x²=36+12√2+2
17+x²=38
x²=√21
x=24
b)3+4+x2=6+2
12+x2=8
x2=20
x=pierwiastek z 20