the solution of (2x-1)²=9 equal to
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your solution is wrong
solution of 2×(-1)^2= -4
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Answer:
(2x-1)²=9.
(2x-1)²-9=0.
(2x-1)².
By using formula (a-b)²=a²-2ab+b² where a=2x & b=1.
(2x-1)²=(2x)²-2(2x)(1)+(1)².
=4x²-4x+1.
(2x-1)²-9=(4x²-4x+1)-9=0.
=4x²-4x+1-9=0.
=4x²-4x-8=0.
(or).
=4(x²-x-2)=0.
=4(x²-2x+x-2)=0.
=4(x(x-2)+1(x-2))=0.
=4((x-2)(x+1))=0.
=4((x=2)(x=-1))=0.
x-2=0.
x=2.
x+1=0.
x=-1.
I think this is your answer.
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