A. Perfect square trinomial: a²+2ab+b²=(a+b)²
B. Difference of perfect squares: a²-b²=(a-b)(a+b)
Answer:
he saved $7.25 Dollars
Step-by-step explanation:
$85 .00÷20% = 4.25 + $60.00 ÷ 20% = 3
Answer:
y = x² - 4x + 12
Step-by-step explanation:
Parabolas have two equation forms; namely the standard and vertex forms.
In the standard form, y = ax2 + bx + c, where a, b and c are constants.
A parabolic equation resembles a classic quadratic equation.
Therefore;
y= (x-2)² + 8
we expand (x-2)²
(x-2)² = x² -4x +4
Thus;
y = x² -4x +4 + 8; simplify;
<u>y = x² - 4x + 12</u>
I believe the answer you are looking for is life expectancy. Comment if you have questions!
Step-by-step explanation:
16+5.6+0.681=22.281