Question

计算2X的平方+8X+8分之X的平方+2X+1除以(X+1)乘以X+1分之X+2

Answer 1

2X的平方+8X+8分之X的平方+2X+1除以(X+1)乘以X+1分之X+2

=(x^2+2x+1)/(2x^2+8x+8) *1/(x+1)* (x+2)/(x+1)

=(x+1)^2/2(x^2+4x+4) * (x+2)/(x+1)^2

=(x+1)^2/2(x+2)^2 * (x+2)/(x+1)^2

=1/2(x+2)