|3x + 3| = 6
1) x>0 2)x<0</p>
3x+3=6 -(3x+3)=6
3x=3 -3x-3=6
x=1 -3x=9
x=-3
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|x + 3| -2x = 9
1)x>0 2)x<0</p>
x+3-2x=9 -(x+3)-2x=9
-x=6 -x-3-2x=9
x=-6 -3x=12
x=-4
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|x² - 16| = 7
1)x>0 2) x<0</p>
x^2-16=7 -x^2+16=7
x^2=25 -x^2=-9
x=-5 и x=+5 x^2=9
x= +3 и x=-3
√x+10 = 2
возведем в квадрат
√(x+10)^2=2^2
x+10=4
x=-6
√4x+1 = 2x-1
√(4x+1)^2=(2x-1)^2
4x+1=4x^2-4x+1
-4x^2+4x+4x+1-1=0
-4x^2+8x=0
4x^2-8x=0
4x(x-2)=0
4x=0 илм x-2=0
x=0 x=2
√36x²-12x+1 +3x = 4
√(36x^2-12x+1)^2=(4-3x)^2
36x^2-12x+1=16-24x+9x^2
36x^2-9x^2-12x+24x+1-16=0
27x^2+12x-15=0 :3
9x^2+4x-5=0
д=16+4*9*5=196=14^2
x=(-4+-14)/18= -1: 10\18= 5\6