Question

expresia (2x-1)la a 2 este egal cu?​

Answer 1

$\bf(2x-1)^{2} =$

$\bf (2x)^{2}-2\cdot2x\cdot1+1^{2} =$

$\bf 2^{2}x^{2}-4x+1 =$

$\boxed{ \bf 4x^{2}-4x+1 }$