Question

Cine mă ajută are coroană​

Answer 1

1) (x+1)²= x²+2*x*1+1²=x²+2x+1

2)(x+2)²=x²+2*x*2+2²=x²+4x+4

3)(x+3)²=x²+2*x*3+3²=x²+6x+9

4)(x+5)²=x²+2*x*5+5²=x²+10x+25

5)(2x+1)²=(2x)²+2*2x*1+1²=4x²+4x+1

6)(3x+1)²=(3x)²+2*3x*1+1²=9x²+6x+1

7)(4x+1)²=(4x)²+2*4x*1+1²=16x²+8x+1

8)(5x+1)²=(5x)²+2*5x*1+1²=25x²+10x+1

9)(2x+3)²=(2x)²+2*2x*3+3²=4x²+12x+9