Answer:
a = [tex]\frac{b^2-d}{4c}[/tex]
x = 27y
Step-by-step explanation:
Order of Operations: BPEMDAS
Question 1
Step 1: Write out discriminant
d = b² - 4ac
Step 2: Subtract b² on both sides
d - b² = -4ac
Step 3: Divide both sides by -1
b² - d = 4ac
Step 4: Divide both sides by 4c
a = [tex]\frac{b^2-d}{4c}[/tex]
Question 2
Step 1: Write out equation
2/3(x - 18y) = 6y
Step 2: Distribute parenthesis
2/3x - 12y = 6y
Step 3: Isolate x by adding 12y on both sides
2/3x = 18y
Step 4: Divide both sides by 2/3
x = 27y
