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-(4x+3)(4x-3) +8( 1-2√2 x +2x²)-1=0
-16x²+9+8-16√2 x +16x²-1=0
16=16√2 x /;16√2
x=√2/2
2x²+8x+8-2x²+4√2x-4≥0
8x+4√2 x≥-4
x(8+4√2)≥-4
x≥-4 / ( 8+4√2)
x≥[-4(8-4√2)] / (8+4√2)(8-4√2)
x≥(-32+16√2) /32
x≥32( 1/2√2-1) /32
x≥1/2√2-1
3x-4x+2≥3x-18
1-4x²+1>-2x-4x²+4x-1
-4x≥-18-2
-2x>-1-2
-4x≥-20
-2x>-3
x≤5
x<1,5
odp. ;
x<1,5
liczę na naj
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