Question

For what value of x is the rational expression below equal to zero? x-1 (x-3)(x + 1)

Answer 1

Answer:

X=1,  X=3  and  X=-1

Step-by-step explanation:

Given the expression (X-1)(X-3)(X+1):

# To find the rational values of X, we equate the equation to zero:

$(X-1)(X-3)(X+1)=0\\\\X-1=0 \\\therefore X=1 \ \ \ \ ...i\\\\X-3=0\\\therefore X=3 \ \ \ \ \ ....ii\\\\X+1=0\\\therefore X=-1 \ \ \ \ \ ...iii$

Hence for the values of X=3,X=1 and  X=-1 the expression equal 0