Należy rozwiązać równania i nierówności:
1) 2)
3)
4)
5)
1.
2(2x-3)+5(4x-7)=90
4x-6+20x-35=90
24x=131
x=32,75
2.
3(3x-1)-2x>45
9x-3-2x>45
7x>42
x>6
3.
3(x^2-2x+1)+4x+20=3x^2-6
3x^2-6x+3+4x+20=3x^2-6
-2x=-29
x=29/2
4.
2(x^2-8x+16)=2(x^2-4)
2x^2-16x+32=2x^2-8
-18x=-40
x=2
5.
3(x^2-1)>3x^2-15x
3x^2-3>3x^2-15x
15x>3
x>
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1.
2(2x-3)+5(4x-7)=90
4x-6+20x-35=90
24x=131
x=32,75
2.
3(3x-1)-2x>45
9x-3-2x>45
7x>42
x>6
3.
3(x^2-2x+1)+4x+20=3x^2-6
3x^2-6x+3+4x+20=3x^2-6
-2x=-29
x=29/2
4.
2(x^2-8x+16)=2(x^2-4)
2x^2-16x+32=2x^2-8
-18x=-40
x=2
5.
3(x^2-1)>3x^2-15x
3x^2-3>3x^2-15x
15x>3
x>