1)(2x-5)^2-(x+2)^2=0 2)(3x^2+10x-8)^2=(5x^2-2x+10)^2 3)(x^2-2x+1)-4 4)4x^2+4x+1=x^2 5)(x+1)^2=4(x^2-2x+1)^2 6)(4x^2-9)^2-9(x-30^2=0 7)9(x-3)^2=4(x+2)^2 8)(4x^2-3x-18)^2=(4x^2+3x)^2
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