1) х2+4х+10 ≥ 0
х=1
1*2+4*1+10 ≥ 0
2) -х2+10х-25 ˃ 0
х=4
-4*2+10*4-25 > 0
3) х2+3х+2 ≤ 0
х=-2
-2*2+3*(-2)+2 ≤ 0
4) -х2+4 < 0
х=3
-3*2+4 < 0
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Answers & Comments
1) х2+4х+10 ≥ 0
х=1
1*2+4*1+10 ≥ 0
2) -х2+10х-25 ˃ 0
х=4
-4*2+10*4-25 > 0
3) х2+3х+2 ≤ 0
х=-2
-2*2+3*(-2)+2 ≤ 0
4) -х2+4 < 0
х=3
-3*2+4 < 0