This is my very own step-step solution:
Step 1:
Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :
42*x^5*y^4-((-7*x^3*y)*(b))=0
Step 2:Equation at the end of step 1 :
((42•(x5))•(y4))-((0-(7x3•y))•b) = 0
Step 3:Pulling out like terms : 42x5y4 + 7x3yb = 7x3y • (6x2y3 + b)
The correct is: 7x3y • (6x2y3 + b) = 0
Quick Side Note:
Binomial can not be factored as the difference of two perfect cubes
I hope this helps a little!
Hope you have a great day!