2|x+1|^2 -|x+1|=3 find value of x
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Answer:
x= -2
Step-by-step explanation:
2(x^2+1+2x)-x-1=3
2x^2+2+4x-x-1=3
2x^2+3x+1=3
2x^2+3x-2=0
2x^2+4x-x-2=0
2x(x+2)-1(x+2)=0
(2x-1)(x+2)=0
Step-by-step explanation:
2(x-1)^2-(x+1)=3
(2x-2)^2-(x+1)=3
4x^2-4x+4-x-1=3
4x^2-5x+3-3=0
4x^2-5x=0
4x^2=5x
4x=5
x=5/4