Question

a) (x + 3)² = b) (y + 2)² = c) (2 + x)² = d) (x + 10)² = e) (x + 5)² = alguém me ajuda​

Answer 1

(a+b)=a²+2*a*b+b²=a²+2ab+b²

a) (x + 3)² =  x²+2*x*3+3²=x²+6x+9

b) (y + 2)² = y²+2*y*2+2²=y²+4y+4

c) (2 + x)² =2²+2*2*x+2²=4+4x+x²

d) (x + 10)² =x²+2*x*10+10²=x²+20x+100

e) (x + 5)² =x²+2*x*5+5²=x²+10x+25