У вас уже задано y =1 -4x
2 -(1 -4x) =x +(1 -4x)
2 -1 +4x =x +1 -4x
1 +4x +3x =1
7x =0
x =0, тогда y =1 -4*0; y =1
228\10 : 57\10 = 228\10 * 10\57 = 228\57 = 4
Ответ: 4.
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∛ ( 75 * 45 ) = ∛ ( 5 * 5 * 3 * 5 * 9 ) = ∛ ( 5³ * 3³ ) = 5 * 3 = 15
⁴ √ ( 54 * 24 ) = ⁴ √ ( 6 * 9 * 6 * 4 ) = ⁴ √ ( 3 ⁴ * 2 ⁴ ) = 3 * 2 = 6
∛ ( 54 / 0,25 ) = ∛ 216 = ∛ ( 3*3*3*8 ) = 3 * 2 = 6