Answer:
y = 4
y = 0
Step-by-step explanation:
Step 1 :
Equation at the end of step 1 :
5y • (y - 4) = 0
Step 2 :
Theory - Roots of a product :
2.1 A product of several terms equals zero.
When a product of two or more terms equals zero, then at least one of the terms must be zero.
We shall now solve each term = 0 separately
In other words, we are going to solve as many equations as there are terms in the product
Any solution of term = 0 solves product = 0 as well.
Solving a Single Variable Equation :
2.2 Solve : 5y = 0
Divide both sides of the equation by 5:
y = 0
Solving a Single Variable Equation :
2.3 Solve : y-4 = 0
Add 4 to both sides of the equation :
y = 4
Hope this helps
