The vertex form of quadratic equation is expressed as:
y = a (x - h)² + k
We manipulate the given equation to be the same as the vertex form. First we transpose the constants to the left-hand side.
y - 14 = 5x² + 20x
Then, we factor out in right hand side the coefficient of the x² term.
y- 14 = 5 (x² + 4x)
We divide the coefficient of the x term with 2 and take its square. We add this value to both sides of the equation but we should remember that in the left-hand side we should multiply this value with five to keep it balanced.
y - 14 + 20 = 5 (x² + 4x +4)
We simplify the right-hand side as:
y + 6 = 5 (x + 2)²
We can now manipulate further the equation above in the vertex form. Thus,
y= 5 [ x- (-2)]² - 6
63 or 90 is your answer, I think
Answer:
7,2 and 8,5
Step-by-step explanation:
The plane traveled 220 miles because 2x110=220
Answer:
Step-by-step explanation:
rewrite you problem with the number as x
22(11) + 10 numbers next to eachother mean to multiply
242 + 10
252
