Question

\(\left(x-3\right)^2=\left(3x-2\right)^2\)

\(\left(2x+7\right)^2=\left(x+3\right)^2\)

Answer 1

\(\left(x-3\right)^2=\left(3x-2\right)^2\)

\(\Rightarrow x-3=3x-2\)

\(\Rightarrow x-3x=-2+3\)

\(\Rightarrow-2x=1\)

\(\Rightarrow x=-\dfrac{1}{2}\)

\(\left(2x+7\right)^2=\left(x+3\right)^2\)

\(\Rightarrow2x+7=x+3\)

\(\Rightarrow2x-x=3-7\)

\(\Rightarrow x=-4\)

Answer 2

a: (3x-2)^2=(x-3)^2

=>3x-2=x-3 hoặc 3x-2=3-x

=>2x=-1 hoặc 4x=5

=>x=5/4 hoặc x=-1/2

b: (2x+7)^2=(x+3)^2

=>2x+7=x+3 hoặc 2x+7=-x-3

=>x=-4 hoặc x=-10/3