Question

(2x+1)la puterea a 2?

Answer 1

Formula:
${(a + b)}^{2} = {a}^{2} + 2ab + {b}^{2}$

Answer 2

(2x+1)²=4x²+4x+1

cu formula (a+b)²=a²+2ab+b² cu a=2x si b=1