Ответ:
ab=s
a-x
b-4x
4x*x=86
4x²=86
x²=86/4=21.5
√x²=√21.5
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Ответ:
ab=s
a-x
b-4x
4x*x=86
4x²=86
x²=86/4=21.5
√x²=√21.5