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dau 20 coronite promit

Dau 20 Coronite Promit class=

Răspuns :

1. |x+5| =11
x+5 =11
x=11-5
x=6

1) √(X+5 ²=11
|x+5|=11
x+5=11
x+5=-11
raspuns final:
x₁=-16, x₂=6
2)|x-7|*||x+1|-3|≤0
|x-7|≤0
||x+1|-3|≥0
|x-7|≥0
||x+1|-3|≤0
x=7
x∈R
x=2
x=-4
x=7
x=-4
x=2
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COROANA TE ROG!!